At this moment you are able to use the Issues add-in in Revit to search for Issues created on ACC in that particular model. However, if you are creating an issue on ACC and are adding markups to that particular issue, you are not being able to see these markups in Revit (just the metadata, pin and attachments).
Especially when checking/remarking sheets in ACC, it would be really useful to be able to see these markups in Revit as well, as an overlay of the actual sheet for example (a bit like using DXF).
This way it will be much easier to implement those markups and close the issue.