Reuse mif files

Hi there

Is there a way to reuse a mif file from other mif? I have a book with conditional texts and a lot of variables that I assign via mif files. The issue is that mif files also have some common styles defined in them (paragraph, tables, colors, characters etc.) and I want to store this common stuff in a external mif and call it via "import common.mif" or something like that.

Is there any support to do this directly in mif format?

Thanks a lot for your time