Hi @californiamatt,

Great observation here! Happy to clarify further. 

While you can’t add multiple segments to a greater segment, you could create the ‘greater’ or ‘all-encompassing’ segment to include the same conditions as segment A and B  to ensure that the users you want included in the grouping are getting captured! I’m very happy to create a product request for this feature on your behalf! 

Thank you for participating in the Community!

-Taylor 

Thank you Taylor for the reply! 

I’m just trying to create a master list to send too but I have data from multiple sources.. not just the email sign-up form.

Another idea I was thinking was to download the query results from a segment and then upload them into the master list too.  

Yes! That would be great to submit a product request. That would be a great feature!!