Think that at least from december 1st, hh at least for spins, include now buy in level, so is it fair to assume that pt4 will release an update so that it can differentiate spins for their buy in level?
Support will be added in the next release but I don't have a specific date for that at this time - open a Support Ticket and we can contact you when it's available.
Support for these partypoker buy-ins was included in the last update. It will not fix previously imported tournaments so those will need to be purged and reimported. If it's still not working for you please send your examples to us in a Support Ticket.