Are absolute pathnames the default option? Does ArcGIS Pro always store absolute pathnames or is there a possibility to change this to relative?
The concept of relative paths is a bit different. When you create a project you can have a structure set up for you
so in theory, your geodatabase, home folder etc is already created.
Can you be specific about what it is you are trying to do. When you move 'stuff' if everything is moved 'relative' to the aprx, then there shouldn't be a problem
Check this link...
you may wish to set up a project template for current and future use so your connections are maintained.
Does ArcGIS Pro always store absolute pathnames or is there a possibility to change this to relative?
As far as I understood it, it is exactly the opposite of what you are writing: Pro defaults to using relative paths. This is why there is no setting for relative paths like in ArcMap.
The only "but..." is that, of course, as with ArcMap, in order to have Pro save relative paths, both your data and your project must reside on the same drive. If a certain data set used in your project is on C: and your Pro project (*.aprx) is on D:, there is no other option for Pro than to save the particular data source with an absolute path. This is no different than ArcMap.
I just tested this out to be sure by moving a Pro project of mine from my D: to my C: drive (with all my data referenced from D originally). The project opened fine on C:, and the layer properties show the C: drive as data source. This is a clear indication of default relative paths in the project.
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