There has come another suggestion in my mind:
Any chance to autonumber with alphanumericals, such as
file01 to file01_a
...
file26 to file26_z
file27 to file27_aa
...
file52 to file52_az
file53 to file53_ba
...
file78 to file78_bz
While typing this I recognize there could be a problem in the length of the numbering string used for the indexes.
What if the range from "a" to "zz" would be exceeded? Could there be an option to define the length of the numbering string, so the next (after "zz") would be "aaa"?
Thx
Karl