Q1) My understanding is that TeamSite is licenced per "content store" - which I assume means partition.That's true. However, it may not be "that easy" to alter your contract with the vendor unless you're about to renew. You might want to have a discussion with your HP rep before bothering with any of this work.Q2) I think I know the answer to this, but I don't believe there is any way to move a branch lock stock and barrel from 1 partition to anotherNot true. You can use the iwmigrate CLT to copy the branch with its entire version history, permissions, role assignments, etc. from one store to another on the same server.Q3) If I succeed in moving the branch in to default, is it an easy matter to remove the 2 unneeded partitions? This is what the iwstoreadm CLT does.PS. You should stick to calling them "content stores". They are not true partitions even though they might look like they are, so use of that term can lead to quite a bit of confusion.
There is a difference from what you have paid for and what you are using. You can check your license (TS.lic) to see how many stores you are allowed. BTW, the admin store does not count so you are likely using two. Now if you paid for 2 and only need 1, they won't give you money back but maybe will drop some of the maintenance Now if you paid for 1 and have been using 2 then you are out of compliance and could get charged for it.
You know I actually created a Support ticket a while back enquiring if I could move a branch down a level (within same store) and asked if I could use iwmigrate for that. I was told no, is it only inter-store rather than intra-store?