Yes. If you make a single-page layout with fields for one record, the default behavior of Data Merge will create a page for each record in the source...but...
I have different master pages/layouts in my document and they are facing pages. |
In that scenario, Data Merge won't apply. Essentially, Data Merge operates on a one-off, single-format basis. That is, you set up layout and formatting for one record (on a single page) and Data Merge just repeats it as many times as there are applicable records in your data source. You can control whether it's a one or multiple record-per-page result, but that's it. You can't merge your data into varied layouts in different ways, using on Master Pages or otherwise. For that you'd need a "catalog plugin."