I dont understand why the game does not save my templates any more. I created a large carrier design several times and saved it as a template. No equipment parts were used, so no mistake here, everything purely cosmetical. The files are shown in the documents folder, but not ingame.

I designed the ships during a normal singleplayer game, when I saved them they were there. When I loaded the game, they were gone.

What am I doing wrong? My other designs work, I have already saved tiny, small and medium hulls.