Positive Pay in D365 For Finance and Operations for 8.1

One of my clients recently upgrade to D365 version 8.1.  This was a Microsoft mandated change as this is the one where overlays will no longer be allowed.  After the dust settled, I was asked to make some changes to their Positive Pay files.  The process worked in their previous environment, however under 8.1 the documents were being produced without data.

After debugging the process, I was able to isolate the issue to the MS side of code.  Specifically, the DMF process was not able to find the required records.  I raised a ticket with MS and they resolved it in short order.  There appears to be a breaking change in 8.1 there the entity name must be capitalized in the XSLT file.

So instead of the old:

Document/BankPositivePayExportEntity

You need to put:
Document/BANKPOSITIVEPAYEXPORTENTITY

The documentation from MS has not been updated  yet.