ORDR.DocNum shows fine in Crystal preview but not after import into B1

Hi,

I have a A/R Down Payment Invoice crystal report in which I have linked DPI1.BaseEntry = ORDR.DocEntry (LEFT INNER JOIN) so I can show ORDR.DocNum on the Page header of my report. When I preview the report in Crystal everything works fine:

When I import the form into SAP B1 and attempt to preview the form however, nothing appears in this field:

Has anyone ever seen something like this before?