How to load a map from a start menu map correctly?

Hi,

I’m experiencing an issue with my game and I feel the issue may be much deeper in the engine then I’ve ever traversed.
So if I hit play in the editor from my main map I can play through the level as intended. However, if i first load my main menu map and use the menu controls to load the first level then I am able to successfully interact with doors, lasers, security panels, cameras, and all the aspects of my stealth game leading up to walking through the first doorway. The doorway has now been blocked by an invisible wall. There is no way to go through it. This effect is very strange to me and I was hoping someone could shed some light on any potential necessary steps to take when loading a level. Thanks!