Relationships changing when joining coalitions

I'll suggest when joining a coalition the relationship shouldn't default to map share, if you already have intelligence share with the player. Too often, I find you forget to change these back and don't get intelligence from your partner's spies.

Also in my last game, this caused my troops to stop moving through my partners territory. I had never seen that before, just because we changed from intell share to map share when we stood up the coalition. Luckily I noticed before losing too much movement time. I can't think of a good reason this should stop movement orders.