MTD Module for Group VAT Submission

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Hopefully a simple question for someone....

We have just made our first group VAT return submission via the MTD module for Sage 50.

I can see the return has been received by HMRC by logging on to Govt Gateway but in Sage 50, the VAT return does not show as submitted.  Do I need to select the "Mark as Submitted" tick box to say it has been submitted elsewhere?  OR should I be doing something else?

Seems silly to me that a Sage module that pulls through the returns from Sage doesn't then communicate back to Sage and tell it they have been submitted?

Thanks.

Richard