
still not clear.
Still no real examples like:
I have 30 folders in one main top folder.
Folder 1 with 500 files from 1_001 till 8_123
Folder 2 with 5000 files from 9_001 till 48_123
...
...
-----------------------------------
First you have meant you need an sequence like:
1_001 > 4
2_001 > 5
3_001 > 6
1_002 > 7
That's something like: First numbering all *_001 occurrences. Then all *_002.
Now you want to number all 1_*** occurrences from 16 to 30 like:
1_001 to 16
1_002 to 17
1_003 to 18
1_004 to 19
1_005 to 20
1_006 to 21
1_007 to 22
...
2_001 to 31
2_002 to 32
2_003 to 33
---?
-----------------------------------
If the last it was you want then it looks easy.
1.) load all files into BRU incl. sub-folders
1
2
3
4
5
1_001
1_002
1_003
1_004
1_005
1_006
1_007
...
2_001
2_002
2_003
2.) select all X_xyz files only (not the single digits files)
3.) File(2) Remove
4.) Numbering(10), Start:16
Look at the NewName column how it works. If it is OK, click on Rename.
But do this with copies of all your files only!!! I don't know how this works for 40.000 files.