Scenario:
- CTs 1-6 are active => serial shows P1-6 and E1-6
- Activate CT7 => serial shows P1-12 and E1-12
- == is it intended like this ? ==
- Deactivate CT7 => serial still shows P1-12 and E1-12
- Reboot
- Serial shows P1-6 and E1-6
In general, maybe it should be better to only show active CTs. (If it's compatible with older OEM devices).