Inverse fuction to "Rip Region" to heal disconected faces There is function Rip region (Rip polygon) which disconnects faces and creates non-manifold mesh

Is there some inverse function which can heal it back ?

background:

I often create some meshes with disconnected faces, sometimes imported from different programs. I would like to Heal them - i.e. to make proper manifold mesh from them, sine they are more convenient for further editation
There is the Weld modifier (since 2.82) for non-destructive workflow.

You can use a vertex group to limit it's influence.