Mine Support

Does anyone know if destroying a mine support cause a cave in? i know in hnh it does but im not sure if that was passed over to salem. I am trying to move them since some are useless atm or badly placed.
Feone wrote:If they were placed to block a pending cave in then yes.
If they were placed preemtively then no.
Vitross wrote:Feone wrote:If they were placed to block a pending cave in then yes.
If they were placed preemtively then no.
Does that mean you cover everything preemptively while you mine out a large cave and them remove them all, you wont have any cave ins?