One of our players is running a quaesitor, and wrestling with A) the lack of peripheral code precedents for Provencal and B) the scattered nature of general rulings.
A case the quaesitor is working on: Many years ago, Magus Abe from the Covenant of Albi (some names are for illustration purposes only) discovered a water spring vis source a few days away. He confirmed that it was a recurring source and duly registered it with his regular Redcap. A few years later the covenant was crushed in the Albigensian Crusade. Abe survived and escaped, and after a period of "independence," became one of the magi of Ostal des Exiles. A few years after this, he returned to the spring to harvest it, and discovered that it had been harvested. He checked with St. Cyprian's Mercer House and discovered that the only vis source in that general area was registered to Magus Filipe of Foix Covenant (also a few days away from his covenant). Annoyed, Abe asserted that he had registered with Merx the Redcap, and was informed that Merx vanished in the general confusion of the Crusade, was presumed dead, and that they are very sorry to say that there was no registration of that vis source under Abe's name.
Abe then has a little flame war by post with various people; and approaches the new quaesitor, Domitiana, with a complaint and case. Domitiana investigates and discovers (with very little difficulty) that the records of vis sources are generally registered to covenants, but sometimes independent magi. The records relating to Albi had been archived, as it was well known to have been forcibly dissolved.
(At this point my mage, Enrico, perks up and asks, "The registration is not in a centralized roll?" in an outraged tone, and the SG of the minor plot waves his hands mysteriously and asserts that "They've always done it this way." We'll just have to fix that.)
This case is pending, but my understanding is that Q. Domitiana will advise the principles that as Abe had not re-registered the source, and so Magus Felipe was within his rights to claim the site for Foix Covenant.
However, it brings up a point; at what point are the property and possession rights of a covenant severed? If they had known they were dissolving the covenant might have sold or given the access rights to the source, but with a sudden destruction, when do claim rights end?
I have been poking around in Tribunal books for guidance (Q. Domitiana's player being down sick), although vis source customs tend to be very local and the precedent from another Tribunal would be of murky value at best, but have not found anything on this except in Normandy, where the rules are so idiosyncratic as to be inapplicable.