Consecutive_bool_op: how often should "Exact_point_map" need be done

[HoBool]

Hallo,

In consective boolean operation example the step "Exact_point_map" is done .
Why is it needed ?
How often should it be done, if more than 200 steps bool-op will be consecutive conducted ? (Only once at beginning ?)
In my programm the mesh will be remeshed after boolean operation, is it required to "exact point map" again ?

Best regards