Switch from individually designed to vol submitter

[Trekker]

I need a clear answer to this question after reading RP 2005-66, Sec 17, and the latest IRS FAQs.

Client in Cycle A has an individually-designed plan, GUST approved and up to date with all amendments (EGTRRA, RMD, cashout). Our firm has a Vol Sub specimen plan with IRS for approval. Client wants to switch to our volume submitter.

Sec 17.03 and 17.04 of 2005-66 and Q-6 of the IRS FAQs seem to dance around this issue, but I just can't make out the song!

MY QUESTION: Does client simply sign 8905 by 1/31/07 or must client adopt an interim plan, which is our specimen plan currently under review, by 1/31/07?

Thanks.

[Bob R]

Signing the Form 8905 is enough.