When i edit multicam and change one camera it also changes the camera before

When i edit multicam and change one camera it changes the camere before. To be more exact, i change from MC1 to MC2 back to MC1 in multicam editind. All of a sudden when i press button 2 for second camera, the frame before who was in MC1 changes to MC2 and vice versa depending on the camera i am trying to select. The end result is not having  camera 1, camera 2, and camera 1 again but three of the same cameras. I have to go back and check every time i do a sequence of changes. This doubles my time and work and is very annoying. I have a video below where you can see that i have camera 1 or MC1 selected, when i change the camera to MC2 the camera before which was originaly MC1 becomes MC2 resulting in 3 of the same selections