Migrated content - removed technologies

[Semthepro]

Hello fellow engineers!

After my game updated to .18.21 and after i loaded my current save i saw this:

migratedcontent-removedtechnologies.PNG (728.78 KiB) Viewed 761 times

i installed following mods:
-AAI Signal Transmission
-Alien Biomes + high res terrain
-Bullet Trails
-Fish and Wildfire
-Grappling Gun
-Robot Attrition
-Schall Transport Group
-Space Exploration + Graphics + HR Grapics + Postprocess
-Squak Through

Now my question(s) would be:
Which mod could have caused that? (every mod is up2date, tho the update was fairly recently)
Do i need to worry about any content actually missing? - i have scrolled through the technologie-tab but didnt miss anything particularly (tho i dont know every tech by heart) and the list provided when i load my save doesnt really help me personally. Any additional information, when explaining to me, would be helpful.

Your insight, advice and help is wholeheartadly appreciated!
best regards
Semthepro

[Optera]

All those demo techs where removed from base.
They didn't do anything since the tutorial was changed.

[Semthepro]

thank you! that solves that mystery - now i can continue the megabase of mine, guess i ran out of excuses to play