diff --git a/pom.xml b/pom.xml
index 6d8a6edf8..1b56d764b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -272,7 +272,7 @@
             <groupId>com.github.ibi-group</groupId>
             <artifactId>gtfs-lib</artifactId>
             <!-- Latest dev build on jitpack.io -->
-            <version>a3481b0660acf998c6179be89033e6d45b94583f</version>
+            <version>6739bc6f50295f930b8f0d0c2ee999066c6f4cc5</version>
             <!-- Exclusions added in order to silence SLF4J warnings about multiple bindings:
                 http://www.slf4j.org/codes.html#multiple_bindings
             -->
diff --git a/src/main/java/com/conveyal/datatools/manager/DataManager.java b/src/main/java/com/conveyal/datatools/manager/DataManager.java
index a0aaec2dd..5e3f5e0a9 100644
--- a/src/main/java/com/conveyal/datatools/manager/DataManager.java
+++ b/src/main/java/com/conveyal/datatools/manager/DataManager.java
@@ -220,12 +220,10 @@ static void registerRoutes() throws IOException {
             new EditorControllerImpl(EDITOR_API_PREFIX, Table.FEED_INFO, DataManager.GTFS_DATA_SOURCE);
             new EditorControllerImpl(EDITOR_API_PREFIX, Table.NETWORKS, DataManager.GTFS_DATA_SOURCE);
             new EditorControllerImpl(EDITOR_API_PREFIX, Table.ROUTES, DataManager.GTFS_DATA_SOURCE);
-            new EditorControllerImpl(EDITOR_API_PREFIX, Table.ROUTE_NETWORKS, DataManager.GTFS_DATA_SOURCE);
             // NOTE: Patterns controller handles updates to nested tables shapes, pattern stops, and frequencies.
             new EditorControllerImpl(EDITOR_API_PREFIX, Table.PATTERNS, DataManager.GTFS_DATA_SOURCE);
             new EditorControllerImpl(EDITOR_API_PREFIX, Table.SCHEDULE_EXCEPTIONS, DataManager.GTFS_DATA_SOURCE);
             new EditorControllerImpl(EDITOR_API_PREFIX, Table.STOPS, DataManager.GTFS_DATA_SOURCE);
-            new EditorControllerImpl(EDITOR_API_PREFIX, Table.STOP_AREAS, DataManager.GTFS_DATA_SOURCE);
             new EditorControllerImpl(EDITOR_API_PREFIX, Table.TIME_FRAMES, DataManager.GTFS_DATA_SOURCE);
             new EditorControllerImpl(EDITOR_API_PREFIX, Table.TRANSLATIONS, DataManager.GTFS_DATA_SOURCE);
             new EditorControllerImpl(EDITOR_API_PREFIX, Table.TRIPS, DataManager.GTFS_DATA_SOURCE);
diff --git a/src/main/java/com/conveyal/datatools/manager/jobs/feedmerge/MergeLineContext.java b/src/main/java/com/conveyal/datatools/manager/jobs/feedmerge/MergeLineContext.java
index 320ba54dd..dedae2168 100644
--- a/src/main/java/com/conveyal/datatools/manager/jobs/feedmerge/MergeLineContext.java
+++ b/src/main/java/com/conveyal/datatools/manager/jobs/feedmerge/MergeLineContext.java
@@ -7,6 +7,7 @@
 import com.conveyal.gtfs.loader.Field;
 import com.conveyal.gtfs.loader.ReferenceTracker;
 import com.conveyal.gtfs.loader.Table;
+import com.conveyal.gtfs.util.CsvReaderUtil;
 import com.csvreader.CsvReader;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -131,7 +132,7 @@ public void startNewFeed(int feedIndex) throws IOException {
         keyFieldMissing = false;
 
         idScope = makeIdScope(version);
-        csvReader = table.getCsvReader(feed.zipFile, null);
+        csvReader = CsvReaderUtil.getCsvReaderAccordingToFileName(table, feed.zipFile, null);
         // If csv reader is null, the table was not found in the zip file. There is no need
         // to handle merging this table for this zip file.
         // No need to iterate over second (active) file if strategy is to simply extend the future GTFS
diff --git a/src/main/java/com/conveyal/datatools/manager/jobs/feedmerge/StopsMergeLineContext.java b/src/main/java/com/conveyal/datatools/manager/jobs/feedmerge/StopsMergeLineContext.java
index 4644c8c3a..c1d69f604 100644
--- a/src/main/java/com/conveyal/datatools/manager/jobs/feedmerge/StopsMergeLineContext.java
+++ b/src/main/java/com/conveyal/datatools/manager/jobs/feedmerge/StopsMergeLineContext.java
@@ -4,6 +4,7 @@
 import com.conveyal.gtfs.error.NewGTFSError;
 import com.conveyal.gtfs.loader.Field;
 import com.conveyal.gtfs.loader.Table;
+import com.conveyal.gtfs.util.CsvReaderUtil;
 import com.csvreader.CsvReader;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -74,7 +75,7 @@ private void checkThatStopCodesArePopulatedWhereRequired() throws IOException {
             int stopCodeIndex = getFieldIndex("stop_code");
             // Get special stops reader to iterate over every stop and determine if stop_code values
             // are present.
-            CsvReader stopsReader = table.getCsvReader(feed.zipFile, null);
+            CsvReader stopsReader = CsvReaderUtil.getCsvReaderAccordingToFileName(table, feed.zipFile, null);
             while (stopsReader.readRecord()) {
                 stopsCount++;
                 // Special stop records (i.e., a station, entrance, or anything with
diff --git a/src/main/java/com/conveyal/datatools/manager/models/transform/NormalizeFieldTransformation.java b/src/main/java/com/conveyal/datatools/manager/models/transform/NormalizeFieldTransformation.java
index 92b1ac77a..fd3bb6266 100644
--- a/src/main/java/com/conveyal/datatools/manager/models/transform/NormalizeFieldTransformation.java
+++ b/src/main/java/com/conveyal/datatools/manager/models/transform/NormalizeFieldTransformation.java
@@ -6,6 +6,7 @@
 import com.conveyal.datatools.manager.utils.json.JsonUtil;
 import com.conveyal.gtfs.loader.Field;
 import com.conveyal.gtfs.loader.Table;
+import com.conveyal.gtfs.util.CsvReaderUtil;
 import com.csvreader.CsvReader;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.text.WordUtils;
@@ -199,7 +200,11 @@ public void transform(FeedTransformZipTarget zipTarget, MonitorableJob.Status st
                 status.fail(String.format("Unsupported GTFS file '%s'", tableName));
                 return;
             }
-            CsvReader csvReader = gtfsTable.getCsvReader(new ZipFile(tempZipPath.toAbsolutePath().toString()), null);
+            CsvReader csvReader = CsvReaderUtil.getCsvReaderAccordingToFileName(
+                gtfsTable,
+                new ZipFile(tempZipPath.toAbsolutePath().toString()),
+                null
+            );
             if (csvReader == null) {
                 status.fail(String.format("'Normalize Field' failed because file '%s' was not found in the GTFS archive", tableName));
                 return;
diff --git a/src/main/java/com/conveyal/datatools/manager/models/transform/RemoveNonRevenueTripsTransformation.java b/src/main/java/com/conveyal/datatools/manager/models/transform/RemoveNonRevenueTripsTransformation.java
index 065646512..a4269860d 100644
--- a/src/main/java/com/conveyal/datatools/manager/models/transform/RemoveNonRevenueTripsTransformation.java
+++ b/src/main/java/com/conveyal/datatools/manager/models/transform/RemoveNonRevenueTripsTransformation.java
@@ -5,6 +5,7 @@
 import com.conveyal.datatools.manager.utils.GtfsUtils;
 import com.conveyal.gtfs.loader.Field;
 import com.conveyal.gtfs.loader.Table;
+import com.conveyal.gtfs.util.CsvReaderUtil;
 import com.csvreader.CsvReader;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -58,7 +59,11 @@ public void transform(FeedTransformZipTarget zipTarget, MonitorableJob.Status st
             Files.copy(originalZipPath, tempZipPath, StandardCopyOption.REPLACE_EXISTING);
 
             Table gtfsTable = GtfsUtils.getGtfsTable("stop_times");
-            CsvReader csvReaderForStopTimes = gtfsTable.getCsvReader(new ZipFile(tempZipPath.toAbsolutePath().toString()), null);
+            CsvReader csvReaderForStopTimes = CsvReaderUtil.getCsvReaderAccordingToFileName(
+                gtfsTable,
+                new ZipFile(tempZipPath.toAbsolutePath().toString()),
+                null
+            );
             final String[] headersForStopTime = csvReaderForStopTimes.getHeaders();
             Field[] fieldsFoundInStopTimes = gtfsTable.getFieldsFromFieldHeaders(headersForStopTime, null);
             Map<String, Integer> fieldIndexes = getFieldIndexes(fieldsFoundInStopTimes);
@@ -73,7 +78,11 @@ public void transform(FeedTransformZipTarget zipTarget, MonitorableJob.Status st
             );
 
             gtfsTable = GtfsUtils.getGtfsTable("trips");
-            CsvReader csvReaderForTrips = gtfsTable.getCsvReader(new ZipFile(tempZipPath.toAbsolutePath().toString()), null);
+            CsvReader csvReaderForTrips = CsvReaderUtil.getCsvReaderAccordingToFileName(
+                gtfsTable,
+                new ZipFile(tempZipPath.toAbsolutePath().toString()),
+                null
+            );
             final String[] headersForTrips = csvReaderForTrips.getHeaders();
             Field[] fieldsFoundInStopTrips = gtfsTable.getFieldsFromFieldHeaders(headersForTrips, null);
             int tripIdFieldIndex = getFieldIndex(fieldsFoundInStopTrips, TRIP_ID_FIELD_NAME);
diff --git a/src/main/java/com/conveyal/datatools/manager/utils/MergeFeedUtils.java b/src/main/java/com/conveyal/datatools/manager/utils/MergeFeedUtils.java
index 0205ef003..606c39a4d 100644
--- a/src/main/java/com/conveyal/datatools/manager/utils/MergeFeedUtils.java
+++ b/src/main/java/com/conveyal/datatools/manager/utils/MergeFeedUtils.java
@@ -15,6 +15,7 @@
 import com.conveyal.gtfs.loader.Field;
 import com.conveyal.gtfs.loader.Table;
 import com.conveyal.gtfs.model.StopTime;
+import com.conveyal.gtfs.util.CsvReaderUtil;
 import com.csvreader.CsvReader;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -45,7 +46,7 @@ public class MergeFeedUtils {
     public static Set<String> getIdsForTable(ZipFile zipFile, Table table) throws IOException {
         Set<String> ids = new HashSet<>();
         String keyField = table.getKeyFieldName();
-        CsvReader csvReader = table.getCsvReader(zipFile, null);
+        CsvReader csvReader = CsvReaderUtil.getCsvReaderAccordingToFileName(table, zipFile, null);
         if (csvReader == null) {
             LOG.warn("Table {} not found in zip file: {}", table.name, zipFile.getName());
             return ids;
@@ -117,7 +118,7 @@ public static Set<Field> getAllFields(List<FeedToMerge> feedsToMerge, Table tabl
         Set<Field> sharedFields = new HashSet<>();
         // First, iterate over each feed to collect the shared fields that need to be output in the merged table.
         for (FeedToMerge feed : feedsToMerge) {
-            CsvReader csvReader = table.getCsvReader(feed.zipFile, null);
+            CsvReader csvReader = CsvReaderUtil.getCsvReaderAccordingToFileName(table, feed.zipFile, null);
             // If csv reader is null, the table was not found in the zip file.
             if (csvReader == null) {
                 continue;