Freddy wrote:
As Shaki pointed out, you just added the replacement with wrong "Apply to" type and even in wrong place (under "Message" tab). It must be set to "Filename" and added under "Subject" tab (not message).
Delete your replacement.
Click on "Subject" tab -> write the replacement again -> make sure to select "Apply to" as "Filename" (it will only be applied to Filename then, not the title / subject).
It will be 100% as you want.
For 99%, but its ok. One thing I need to do after upload - delete this prefix from the name, because I only needed it in the link name. Thank you.