Similar problem.  I had to relink a mortgage account to my QB online account.  I re-linked it and selected "long term liabilities"  and "notes payable" when I linked it.  Now I am trying to review imported monthly payments.  When I try to split the payment into interest and principal, I get this error message:  "This account is set up as a liability account. To accept this transaction, either disconnect the account or change its category type to bank or credit card."  This didn't used to be an issue, so maybe I messed something up when I re-linked?