Transfer from account disappearing

cfischy Member ✭✭
I enter a monthly paycheck transaction in my checking account that includes transfers to my 401(k) and other accounts.

Today, I discovered that that all of these transactions still exist in my 401(k) account but if I go back to the original transaction in my checking account, for 6 of my paychecks, the transferred amount is still shown as a line item, however, the target account (401(k)) has disappeared.

If I go to the transaction in my 401(k) and select "Go to transfer...", I receive an error message that the account no longer exists. This is the second time in a year that I have discovered similar corruption!

What is happening?