missing biq

Sorry if this has already been posted but I didn't see anything in the known bugs sticky or any of the first several pages of posts. When editing scenarios my saved biq files seem to be disappears. I've used both "save" and "save as" functions as well as done a file search to make sure that they are not been saved in other folders. I've also disabled my virus protect just in case that was the culprit. Now I copy my biq's into another folder as to always have an extra just in case. Judging from my post on the Creation forum I'm not the only one having this problem.