I have created an overlay (.mdf) that simply has boxes and lines on it, no fields specified. I have an iSeries print file that has been used to merge data onto this form in an old version of JetForms Server. In JetForms, the JFMERGE slaps the .mdf overlay onto the iSeries print file so everything prints where it should on the overlay form. Everything is defined in that iSeries print file.
Can I do the same in Adobe Central Server (5.5) or do I also need the .tdf to go along with the .mdf since there are no fields on it anyway?