Yeah, it should work because they're at the same tier.
When getting a license for an add-on, you have to match the size of your Jira instance.
For example, if you have Jira for 1000 users, you have to get an add-on license for 1000 users.
This is Atlassian's rules and we do not have control over them.
I hope you find this useful,
Cheers!
