It may live, but due to it's apparent age might not fill in enough to get a very high sap/sugar %. My guess would be to cut it down. However, if you just want to see what happens, leave it. On the trunk of the tree there are dormant buds awaiting exposure to the sun, some will likely sprout limbs. In logging these limbs are called epicormic branching, generally not good for saw logs, but not necessarily bad for maple syrup production.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.