I see what you are talking about now. So, in CVI I press
Ctrl+F, select
Multiple Files... and select
Show All Matches. In that extra part of dialog it brings up, it gives you two independent ways of searching. You can either search a certain file type within a folder, or search files associated with the project.
If you select
Search in Folders then it will search the backup file because it is a .c file in that folder.
I would suggest unselecting
Search in Folders and just putting checks next to the files you want to search in Additional Files. This way you do not search the backup files, but still are searching things relevant to your project.
Kristen
National Instruments