I'm also having some trouble.
I was able to import my BTS using the import_from_json
However, I also had some BTS via the november sharedrop, 
in genesis_dvs.json I have
Initial_balances:
    2x BTS addresses (imported fine via import_from_json)
ShareDrop:
    1 PTS address 3 times, 
    The same PTS address was used for an AGS contribution as well as holding some PTS
    (I was able to import some via the import_private_key, but I can't match up the DVS amount int he client to any of the amounts listed in genesis_dvs.json
    1 BTC address which was used for AGS donation.  I can't get this one to import.
    
i
 I've tried it several times on different accounts.  I've tried the collect_vested and collect_genesis etc
Is there a way to query a PTS or BTC address to see if it's been claimed or not?  I have no idea what's been imported successfully  from the sharedrop....