Sounds like you need to select the “Use as Dataset Name?” radio button on the left side of the Field Map Layout before saving the field map as shown in the demo video here: https://www.youtube.com/watch?v=zOA-rGyv-js&feature=youtu.be&t=133
Let us know in detail if this was not the cause if the issue you are having with the field map layout.
Regarding spending time creating the field map… Time is better spent naming the PDF field names the same as the Formidable field name (or field keys) and using the “Enable automated layout creation for new field maps” found on the Settings tab to automatically generate the field map layout.
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