We use Aspose.Word 126.96.36.199 to mail merge with a pre-defined template.
One of our scenario is to have a template with image in the header and in the body and merge the same with the records queried from the database in an xml stream. It worked fine for less number of records like less than 50 records. But our usual scenario is clients merging more than 5000 records.
In the later case, image in the body and header did not appear. Please get back on it immediately.