Change Block where already connections are linked

Hello,

Is there a way to change a block to something else without losing the already made connections.

For example: a OR port where a lot of connections departs to other blocks. 

Is there a way to change for example the OR port to something else for example a AND port without losing the already made connections,

Or a Input where a lot of connections departs and want to add for exapmpke a AND port between the Input and the already made connections without delteting the connections and make them again.

I have searched but not found a way.

Thanks

Dca

Thanks the first video is what i was looking for easy if you know it.

Many thanx !