I would like to change the Membership Type of an existing Distribution List to Dynamic, but the field is greyed out.
Does anyone know how I can solve this?

I would like to change the Membership Type of an existing Distribution List to Dynamic, but the field is greyed out.
Does anyone know how I can solve this?

Hello @JamesHaworth-6987
You can't change the type of group after it's been created. To change the Group type, you must delete the group and create a new one.
It is not feasible to convert a Distribution Group to a Dynamic Distribution Group .
https://answers.microsoft.com/en-us/msoffice/forum/all/convert-distribution-group-to-dynamic-distribution/10c02dd5-0320-46f3-9d70-2e1be531fd9a
Hi @AndriyBilous.
Thanks for your reply. To clarify, I'm not looking to change the Group Type. I need to change the Membership Type.
The article you linked to suggests this should be possible...

Mail-enabled universal distribution groups (also called distribution groups) can be used only to distribute messages.
https://docs.microsoft.com/en-us/exchange/recipients/distribution-groups?view=exchserver-2019
We have Azure AD Premium P1.
I should add that I am already using Dynamic groups successfully and have been able to change the Membership Type of other groups. Just not these ones!
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