Keep phone without broadband?

[#1]

Hi
Is it possible to migrate broadband to a BT wholesale ISP and keep the line rental and phone with Plusnet?
We currently have broadband unlimited, line rental, and Anytime Calls from Plusnet. We will be out of contract very soon.
Thanks

[#2]

As strange as it may seem my understanding is yes you can, which appears to be at odds with the fact that PN won't allow anyone to sign up for phone only.

[#3]

Yes. The account will be changed to a "Residential Services account" which had no billing component on it other than the telephone itself.