Add a new paragraph to Stockpiles:

If a Resource is gained by a Baron and no location is given for it to go to, or if a resource the Baron owns ceases to be in any legal location then the Baron must choose where to put it out of all legal locations for it that are available to them. If there is no legal location for the resource then it is lost. If a rule states that a Resource is removed but does not say where the resource must go afterwards, it is instead removed from the game entirely.

Move the second paragraph of Stockpiles to a subrule of Stockpiles called Taxes, and reword it to:

Any time a Baron would gain any amount of resources, those resources are subject to Tax: one quarter of those resources (rounded up) and are instead added to the Dungeon Stockpile; the Baron chooses which of their newly gained resources are to be transferred into the Dungeon Stockpile. This Tax is applied collectively to all of the Resources gained by that Baron at that one time, rather than per type of Resource. If the Baron gains resources multiple times in a single atomic action, these gains are all considered to be simultaneous for the purposes of calculating the Tax.

Taxes are not applied to a resource that a Baron loses then regains in the same action, or if they move the resource to another location they control.

In the rule Migrants, reword the sentence “Any Migrant in a Stockpile is referred to as an Unsettled Migrant, and if a Baron would ever have more than 8 Unsettled Migrants, they must choose which Unsettled Migrants to remove from the game until they have 8 or less. No Royal Migrant may be an Unsettled Migrant, and such a Migrant is removed from the game if they ever become Unsettled. “
to

Any Migrant in a Stockpile is referred to as an Unsettled Migrant, and if a Baron would ever have more than 8 Unsettled Migrants, they must choose which Unsettled Migrants to move to the Dungeon Stockpile until they have 8 or less. No Royal Migrant may be an Unsettled Migrant, and such a Migrant is removed from the game if they ever become Unsettled.