RE: PR Batch did not post to GL
I am unclear about status of C or P. Are you limiting which batch statuses you are selecting? If so , don't.
On the PR Batch Register>Summary report, on the report tab, chose a beginning period of 01-1990 and ending period of 12-4040. Then on the select tab, select for the batch number you believe is associated with the missing check based upon the fact that you have the batch control to show you which batch it is.
If you find nothing, then use the same period begin and end range but select where batch.crtd_datetime > 01/01/2013