Invalid MOVE Command in new version

I want to rename mp4 files. I want to move "SxxExx" from position 16 (backwards) to position 1. I wrote to Position 100 since no filename is that long. Means 100 backwards is position 1. It worked perfectly!!! But not in the new version! Everythings shown in the picture (first version 4.08 where the command doesn't work, beneath version 3.90):

https://imgur.com/a/xI3dRdf

Reply to #1:
Hi Katharina,
I noticed that there are some methods placed before the 'Move' method. These might be influencing the 'Move' method. Have you tried placing the 'Move' method first? You may need to adjust the number of characters to move accordingly."

Miguel

Reply to #1:
You are right, in the 3.9x version, the Move method does work just fine.

Reply to #3:
I noticed that you can now choose between version 3 and version 4 in the user guide. That's why I'm now wondering if the MOVE command really has a mistake or if it has been changed without being able to figure out how. It would be good if there was a page where the obviously serious differences between version 3 and 4 were described. As long as I don't know how to change the command I have to stick with version 3...

Reply to #2:
Thanks for your tip but the problem is really the change from version 3 to version 4. As long as I don't know how to change the Move command or what to replace it with, I have to stick with version 3.

Reply to #5:
You can try to contact support by email to understand why the method has changed. For example, the change may be due to a regression or a new operating logic.

Reply to #6:

OR you could use a Replace method until the Move method is straightened out.

Replace: (.*)(S\d+E\d+)
Replace with: $2 $1
Use regex, 1st or all occurrences, apply to name.

Honestly, I've never used the move method. Replace is much more flexible and I don't like counting characters anyway! :)

Best,
DF