The issue outlined at the link below is exactly what I am inquiring about.
https://community.quicken.com/discussion/7884127/how-do-you-change-my-address-for-online-bill-pay
Once logged in I could not find this thread so I have posted this question.
The question is how to modify the accountholder's address that is printed on the check using Quicken Check Pay?
I spent an hour on the phone with tech support and their answer was that it could not be changed.
If you will note that the Edit Payment Account screen shot posted at the link referenced above is designed to edit/strore the Accountholder's address, which I assume is the address that should print on the check.
After updating the address I sent a "test" check to myself . In the top portion (voucher) of the sheet, which includes the check, the accountholder's address is correct, but on the check itself the address remains unchanged and of course not correct.