Here's the deal. I want to make the Courier 6 Power Armor mod work with TUPAM. I opened up the GECK, set the Courier armor as the active file and then checked off TUPAM. I added the TUPAM effects and repair lists to the Courier armor, hit OK, and saved. However it seems all my work is erased when I close the GECK. In game, none of the effects are present, at all. Not even the regular power armor effects, all it says is that it is heavy armor. When I open up the GECK, all the effects and repair lists I added are gone. How do I do this?

Is TUMAP an esp? If so, the *GECK will not allow it as a master and will unceremoniously remove it from the active plugin's masterlist if it's there and will not add it if it isn't. With FNVEdit, ESM'ify TUMAP, make the changes with the GECK, then esp'ify and swap esp for ESM in the plugin's masterlist. Alternatively, you might be able to build th patch without the GECK, just using FNVEdit.

*The engine doesn't care