MIP format is a special raster format from Corel PaintShop Pro and contains multiple resolutions of the same picture. As far as we know, these files can only be opened in the original software and we have not found any other tool that would otherwise support import of .mip files. As for export to .jas, this will create version of the original picture in a 24bit format. Probably used for very old images when resaving it using later version of PaintShop Pro.
Updated: August 14, 2023