Some playlists are missing from iTunes Match I've just subscribed for iTunes Match and it did quite a good job of matching stuff except that three of my playlists are missing from it. That three missing playlists only show up on my iMac which is my source Mac for my entertainment.

I tried duplicating and renaming those three missing playlists with no luck.
Turn on the iCloud Download and iCloud Status columns in iTunes, using View > Show View Options (on a Mac).  Look for items with problems: for example, voice memos, which can't be uploaded to iTunes Match.
If step 1 doesn't reveal any problems, try turning off iTunes Match (via Store > Turn Off iTunes Match), then turn it on again.