Ever since I decided to make ACH payments using an outside service, I have noticed the mailing addresses for vendors I have previously paid--via mailed / addressed check--have disappeared. 

Multiple vendors' addresses are just gone from their records, even though I can view less-than-year-old cleared checks with the mailing address printed on the check, so this is not just me speculating or not remembering correctly. 

Where did the vendors' addresses go???
It's very annoying to have to re-add the same information to the vendor records.