combining 2 nurseries

I have twins. From birth to 13 months old they spent every night together in the same room (same crib in the beginning) At 13 month I separated them because I had to sleep train one and didn't want the other to wake.

They are now 19 months and still separated. They do great but I still hear an occasional fuss or one will hit a button on their teddy bear. I want to put them together again since we will be moving to a 2 bedroom house in a few months and they'll be room sharing there.

They sleep sooo good right now and I'm worried they'll start waking each other at night. I really don't want to think it. On top of trying to make it an easier move and room transition for them I worry because my girl is the other side if the house. I hate having her so far and worry about storms and such. I'm not sure if I should risk changing a good sleep routine or what. What do y'all think?