Is there a way to force ARWorldMap to relocalize on our position instead of inferring from the features around us? For example, since ARWorldMap has its own root anchor, can we do something like "load this ARWorldMap using my current position/transform in the real world as the root anchor"? From my understanding we can do this with a single/multiple ARObjects but haven't found any resources about collections of ARAnchors in an ARWorldMap
This is not supported out of the box. What you could do is compute the offset between your current location (before relocalization) and after relocalization and apply that accordingly.