Clarifications about constraints please

Hello, my main assembly is getting complex. I am a bit confused about constraints of a sub-assembly by itself and what happens after it is integrated into another assembly. I seem to get inconsistent results and got things messed up.

Let's consider the following:

Assembly1 (A1) has three components a, b, c

Assembly2 (A2) has five components d, e, f, g, h

In A1, a is connected to b and b is connected to c. a is not connected directly to c.

If I import Assembly1 as sub-assembly to the more complex Assembly2.

    

1) What happens if I delete the connection between a and b inside Assembly2 and save? Is the connection between a and b supposed to be broken automatically in file Assembly1?

     

2) What happens if I add a direct connection between a and c inside Assembly2? Will a connection between the two be added automatically in file Assembly1?

     

3) What happens if inside Assembly2 I highlight Assembly1 and open it. Then, add/delete connections and save. Are these added/deleted connections supposed to be updated automatically in Assembly2?

Thank you.

SolidworksAssemblies