I have had no resolution to the above question concerning the abilty to delete of old floor plans. I now have 301 floor plans and serious functional difficulties with drawing new floor plans. I really need to correct this is.
For floor-plans pro delete saved plans - If you go to the screen with all plans listed, in the top right of that screen click the edit button, then select the plan you want to delete and after selected click on the trash can. A pop up will say delete plan and click yes.
That should work.