No there is nothing said about converted ones and multitrack cues on wiki.
But I've done the complete "how to" run down in here at least twice.
People didnt like it so much, because it involved a tool that they had no idea what to do with, even when you told them - apparently. Now its not in the wiki verbetum (word for word) - but in essence is there.
Read this:
https://forums.launchbox-app.com/to...n-and-then-pbp/?do=findComment&comment=277997
Separate the factoids that the first part is how to create a "single bin/cue" out of any multitrack cue - and only the second part deals with creating pbp's out of them.
Now the wiki states that you could do the same with mounting the image in a virtual drive and re"ripping" it - but this method is faster and easier. chdman you can find after a simple google search - here:
http://www.thekillerinstinctproject.com/kiproject/chdman.html
This takes care of the "multitrack" issue - as far as creating pbps is concerned. It doesnt mean, that pcsxrearmed will magically play multitrack games it didnt play before. It might, it might not, it might depend on the game - no extensive testing has been produced so far.
Also - if you hit a certain issue, that you think might be "capability related", try the same roms/diskimmages on a PC install of retroarch if you can. That way you'll find out if complaining in this forum, or in the libreto core forums at the retroarch project makes sense.
I found out all this stuff, and thought about its implications, without asking one single person to do it for me. Just as a small reminder, that it is possible.