We also received the letter late (yesterday). I queried its contents with the DWP to clarify the issue of “new” proformas. I was told originally that we had to re-run the proformas as previously-used ones would be rejected.
However I had another reply today which said that in fact the deadline has now been extended to Weds 7th May, and that “previously used proformas stating ‘no trace’ may be re-submitted.”
Hope this helps!
