Quickbooks Deleted a Check on its own

We use Quickbooks Desktop and we run payables checks every single Friday - however, because of an approaching due date on our water bills, I ran one check for our Municipal water bills a day early to mail it off sooner. This was check # 70151 in our system, ran and mailed 7/16. When Friday arrived, I went to run the remainder of our payables checks and somehow the water bills were still sitting there to be paid. How can this be if I had ran them the day prior? I went to our Municipal Water provider in the Vendor section and check # 70151 was nowhere to be found - just my original entry of the two bills waiting to be paid. I checked the audit log thinking someone else must’ve accidentally deleted the check and check # 70151 exists and shows it was created on 7/16, but there is no other entries for check # 70151 - no one deleted it, no one changed it, no one voided it, nothing. It was created and somehow fully disappeared from our system aside from the audit log. I ran a fake check and reassigned it back to check # 70151 as an easy fix, but it is concerning to me that Quickbooks somehow deleted a record on its own. 

I have been using Quickbooks Desktop for 9 years now and have NEVER seen this happen so I don’t have a clue what could’ve caused this. Perhaps a server error that didn’t properly sync our company file from yesterday? Although everything else I did in the company file yesterday shows as normal, so if so, it failed to sync only 1 thing. Has anyone else experienced this?