Can you reset the accumulated amount of a payroll item with a one-time limit?

We had an employee take out a loan against his 401k last year, so we created a payroll item with a one-time limit to repay the loan. After paying off that loan, he took out another slightly larger loan, so we increased the limit of the existing payroll item to the new loan amount. Several weeks later, we noticed that the deduction was no longer being taken out of his paychecks. QB had added the deductions to the accumulated amount of the previous loan and reached the one-time limit after just a couple of weeks. So my question is, is there a way to reset the accumulated amount of a payroll item with a one-time limit? If not, what are the options when an employee takes out multiple loans?