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Just to eliminate one "potential" issue...
Make sure that you have the right owner and user rights on your files, not just by name but also by ID. In other words, try to reset the ownership.
Reason for mentioning this:
Especially if you move files between two physical different Unix/Linux systems, users (even if named the same) can have different id's and therefore the rights can be different.
Good luck
Cheers
Aprox