Hey there,
we are using both Monday CRM and Monday Work and have created a separate account for the prior (as we’d been told by a support). Now after spending a lot of time to create boards and automations, we realize that we could have it all in one account, which would be much better obviously… Merging two accounts, especially if one of them only contains CRM boards and the other only Work boards should definitely be possible as at the moment there seems to be no way out of this for us 
Thank you for your consideration.