Are you able to visit your old neighbourhood? Perhaps saying good bye on your own terms instead of having it wrenched away might improve things.

I managed a holiday to some mountains last summer. No they weren't 'my' mountains but they were the Rockies all the same. I said goodbye properly as I left. Oh I was still teary eyed but it was on my terms instead of being dragged away kicking and screaming. I still pine away for the West Coast but having a goodbye on my own terms much improved things. The grieving is a little easier.