Bug - When switching to zst al old .tar.gz files in the target folder and subfolders will be renamed to .tar

[Tristan]

Small bug but when you're switching to zst by following this guide: https://directadmin.com/features.php?id=2814 all old files with tar.gz extension in the target dir and all subdirs will be renamed from tar.gz to just tar. Maybe this should be added to that feature information page or fixed so at least files in subdirectories won't be affected?