TKotL

Firstly, thanks for you work on this. I think the issue is a CKAN one. Where your new, iterative, development/migration exists in a different directory and hence can co-exist with the earlier 1.17.2 version, whatever CKAN uses for metadata is causing it to think they're the "same" and hence removes 1.17.2 in favor of 1.9.99.0-adoption, which causes parts to vanish (potentially game breaking). Or I could be completely wrong, I'm speculating as to how a lot of this functions. Since you explicitly don't support CKAN, I don't think you care much, but it may be useful for other forum readers to understand what's happening?

The version of 1:1.9.99.0-adopted on CurseForge is missing a bunch of parts vs. 1.17.2. I use CKAN (I know, I know), and it must have been using 1.17.2 until recently as a whole bunch of parts vanished from my game. Contents of GameData/SpaceY/SpaceYLifters/Parts in SpaceY_Heavy_Lifters_SYL_by_NecroBones-1.9.99.0-adoption.zip I just downloaded from CurseForge, which matches the 1.9.99.0-adoption tag on GitHub: CargoBays Command Control Docking Contents of GameData/SpaceY-Lifters/Parts in 1.17.2: CargoBays Command Control Decouplers Docking Engines Fairings FuelTanks HeatShield LandingLegs LaunchClamps RCS-OMS SRBs Structural ThrustPlates themes.cfg Looks like a metadata push (maybe?) flagged something as release, so CKAN overwrote the earlier version and hence eliminated a bunch of parts. Pinning back to 1.17.2 ought to fix it.