It shouldn't really matter how big the file is. My guess is you would have to wait awhile with a 100Mb file, but it is only copying the file to a folder in your AC folder. It isn't actually in the database. There is only a link to the file. The warning is there in case users want to back up the import folder, which I think is not a very good idea anyway. I could be wrong though. But, you can copy and paste a 1GB file into the folder yourself just like you can copy and past from your desktop to your My Documents folder. Of course, there wouldn't be a link to the file unless you do it manually in your Imported Items Access database.
