I just took ownership of my house today and noticed the previous owner left the BEV dish on the roof. I was going to go with rogers but is there any value to the dish???
If you remove the dish and try to sell it on the internet you could get around 25-40$.
If you live in an area were there is lots of cottage (or second residence) or a trailer park your chances of selling it are greater, you might sell it to someone who wants to use it for their second residence.
Part of Bells "move" plan is to encourage people to leave their old dish behind and they will install a new dish for free at their new house. This eases a potential install at the old location (new location in your case).
You can either make use of Bells services or not. If you do not, then the dish now belongs to you. Leave it where it is, store it, throw it away, give it away, sell it, the choice is yours.
You will find that since this is the ExpressVu forum, most pople will likely say "Sign up" LOL
If it mounted to roof itself, use care removing it, as you don't want to cause more damage to the roof, and create a possible leak
If you want it down, try and do it in the summer, when you can patch any holes with a little more ease