Pre-R2020 we could use the Publish and Acquire Coordinates commands to target one site in a link or project. Manual editing of the Shared Coordinates would only affect the Current Site.
In R2020+, manual editing of the Shared Coordinates affects all Sites, this seems to be a bug. Publish and Acquire Coordinates actually states that it will alter all Sites, not just the current one. So, feature, not bug?
Only the Specify Coordinates At Point command still affects only the current Site. Very unpractical and I for one do not see what purpose is served by this change in functionality. I want to be able to manage multiple Sites with every command in the Project Location ribbon.