Paychex Connection to FE NXT?

We use Paycor (rather than Paychex) to process payroll. Paycor creates a journal entry batch (EDI?) and loads it onto FENXT unposted. We then review and post. This process was built in late 2020 or early 2021. (I remember the time frame because I was home in bed with Covid doing phone meetings.)

The process is very sensitive to coding errors on the payroll inputs, and getting good responses from Paycor's customer service is mildly described as difficult. When everything works, it works well; when it doesn't, things are difficult.

We're starting to see hints of Paychex involvement on the customer service side.