ProSeries did a pretty good job on this one but they did miss an item.

First, make sure you report it on the Federal return as a state tax expense. Then on the MD return 510 Information Worksheet enter the payment as a 4th qtr estimated tax payment.  Next on the actual 510 check the box "Check here if electing to remit tax on resident member's share of income". This will generate the nonresident/resident tax paid on the Schedule K. Then the step ProSeries missed - also on the Schedule K line B(5) Other additions add a line for Resident Taxes Paid by the Entity and list the amount. This is done as it will be an addback to income on the MD K-1 and hence individual return. Finally (if needed) allocate the resident tax paid to the applicable members as a special allocation. This is only for the 1065 as you cannot do a special allocation on a 1120S.