MultiMc may delete files instead of moving them to the save folder.

[Estecka]

Operating System

Windows

Description of bug

When dropping some file and folders into the MultiMc's own "World" folder of an instance, MultiMc only seems to keep the "valid" world folders. If you attempt to the move files, MultiMc will not keep the invalid ones, but those willl still be removed from the source directory.

Effectively, the files are deleted with no warning. A case where this is harmful is when attempting to move a world backup in rar or zip format.

Steps to reproduce

• In MultiMC, open the World window of any instance.
• In window's File Explorer, create a random file.
• Shift + Drag & drop the file into MultiMC's window.

Observed behaviour: The file is deleted.

Expected behaviour: Either of, the file is moved to the instance's save folder, or remains in its original location.

Suspected cause

No response

This issue is unique

• I have searched the issue tracker and did not find an issue describing my bug.