@The Brain: This would mean that the weapon stash is part of the save.fps-file, which I really don't know. Can anyone confirm this?
If the stash is _not_ part of save.fps (and I think it isn't, for what purpose else would have the objects-file?), one can easily run into the bug: assume you end a given mission and preserve the respective save.fps short before that missions end. Now, say e.g. two missions later, you realize that you miss a crucical part of equipment and decide to revert to your preserved save.fps. If the equipment is _not_ part of save.fps but of another file that had already changed too in between the two missions, you are stuck again.
Question: where _exactly_ (i.e. which file) is the current weaponstash stored?