They should match unless you are Back Dating entries, assuming you are printing the AR and AP from zero to the end of March, Type A. (to match the Balance Sheet).

Payments received and cheques written would affect both the BS, AR & AP reports the same way (based on the date of the entries. Reconciling items will have no affect on the balances (only Open items).

Only other item is if you entered items from a Journal and entered two different dates of entries affecting the BSARAP