The dome holds humidity in the air around the plants. Since they're used to this, when you remove the dome and humidity drops, they wilt. The solution is to slowly acclimate them to your normal conditions. If your dome has openings that be closed and opened for controlling humidity, start by opening them just a little. The next day halfway. The next day all the way. Then remove the dome entirely. If it doesn't, try removing it for an hour, then two hours the next day, then 3 hours, etc until the plants don't wilt in the open air. You can spritz them with water while they're acclimating to help them if they start to wilt before it's time to put the dome back on. Good luck.