I created a memorized "Check Register" report. My display settings include type, date, num, name, account, original amount, paid amount. Then under the filters tab, select 'multiple transaction types and tick items like check, payment (and any other payment methods used). Export the produced report to Excel and sort & group by vendor.
We use as a weekly check register to summarize both check and ACH payments, when you select the report to cover only a single day. By using a range like 1/1/16-12/31/16 you can generate the data for an entire year.