Bank Account Auto Deactivating

Summary:

I have a user that asserts that they are not deactivating the supplier bank account when they have completed their banking validation and are updating the supplier payment method. This is at the supplier site level. We are finding that after it gets approved it shows a deactivation date which is set to the next day after she made the update.

Is it possible that there is a certain activity that she is doing (unknown to her) that may be triggering the bank account on the supplier site to get inactivated?

We have an audit report, but it doesn't show the inactivation details. When we are in the module we can see this person was the last user, but they are adamant that they are not populating this field. I'm inclined to believe them as they are not new to the process, but I am wondering if some other action she may be taking could cause this to auto-populate with the next days date.