ibm to wmf conversion is a matter of export between two graphics formats, from ancient .ibm files to Windows .wmf files. Such export are often done from recovery of old hard drivers or floppy disks and exporting the contents to modern formats. As for support for old Commodore Amiga graphics files, you will most likely need a special utility for this as modern graphics editors do not usually support these files.
Updated: March 14, 2023