In the active healing process, a healer was required to mimic the mana sense of those who were the target of their healing or recuperating magic. This was done with the help of their spells. Of course, there was no way it would be 100 percent accurate. But the good thing was it didn't have to be.
Mana in the surrounding area was generally pure, unblemished, with no sign of anyone's mana sense. It would only be marked with mana sense when it was absorbed by rankers, making it part of themselves.
It is the healer's responsibility to act as a mediator between the ranker and the unblemished mana. Then they would actively try to imbue that mana with the ranker's signature using their spells. It required exceptional intelligence to sense the fluctuations of mana sense and adjust the active healing spells accordingly to make it work.
