@Starwaster thanks for your reply. Yes, the parts are definitely unlocked in R&D. As said, as soon as I remove MFT from my mods the parts appear again and also my R&D is completely researched. To verify the problem I started 2 new careers, unlocked the complete R&D and had a look in the parts list - in every save the same situation: Parts there but gone when MFT activated
Edit:
It affects not all TAC LS parts but most of the life support hexcans and containers; food, water, oxygen, waste. The recycling modules as well as the mixed resources hexcans/containers (containing food, water and oxygen at once) are not gone when MFT installed - this might be interesting. Happens weather mods are installed via CKAN or manually, no difference. Tested several times. Screenshots attached. Log attached. Can't help myself... Thanks!
Link to LOG