J. R. Tracy
1) If a dummy stack is fired upon and passes any tc/mc results does it stay concealed?
The TC/MC result on the IFT is enough in and of itself to eliminate the dummy stack.
2) if a concealed unit is fired upon and passes any tc/mc result does it lose concealment? I thought that such units lose concealment.
As above, the TC/MC result will result in loss of Concealment before you roll for the TC/MC itself.