Well here is a question I never thought of asking before. I recently found a roll of Aerographic film. 5.5"x20'. Examining it in the dark I found that it has been exposed already. There is no backing paper on this film. Data says there is 3.5' at the beginning and the end of the roll. What I don't know if it has been developed or not. The Data sheet for this type of film says to store it on the reel. I probably will cut a section off and see if it has been processed.
But would there be the problem with redeveloping it?
What do you mean by 'redeveloping'? If you mean developing it regardless if it was developed already - no, it won't hurt. But as you can easily determine if it's been developed by clipping a small bit from it, there's not really a point in doing so.