I don't think Split View can do what ProblemChild wants.
MC can copy/paste tag info from a bunch of selected files in tabulated text format to Word, Excel and similar programs, but it can't paste it back to another bunch of files.
For now, it is better to use the freeware
Mp3tag program, which can do the job:
- drag a set of files to mp3tag, select all and do: right-click > copy tag
- drag another set of files to mp3tag, select all and do: right-click > paste tag
Naturally you must have both file sets in the same order, otherwise the tags will go to wrong files.
If you use MP3 format you should set Mp3tag to write tags in the IDv2.3 ISO-8859-1 tagging format. I have explained that in this thread:
http://yabb.jriver.com/interact/index.php?topic=34634.0. Other file formats should work fine without any special settings.
After you have copied the tags in Mp3tag you can refresh the tags in MC:
Select files > right-click > Library Tools > Update Library (from tags)