We don't use drawing titles (we use autotext placed on the views instead), but I think there is an option for 'back reference': https://help.graphisoft.com/AC/23/INT/#t=_AC23_Help%2F070_Documentation%2F070_Documentation-100.htm
Are you trying to have multiple tiers of back reference, maybe? I think that might not be possible, currently.
There is also a (very old) method of manually setting a drawing as reference, placing autotext that references this and (supposedly) if you set a new drawing as reference after that, the already placed autotext still works with the old reference. This seems very archaic though.
Update on the cross referencing.
I got the same issue as this guy, and I could see you did reply to his post.
Basically, you can only back-ref the source markers of the drawings. My problem is that I want to back reference one section to another section, or a detail to a section. In my case, I want my facade detail section 1:20 to cross reference my overall building section. On my overall building section I created a linked detail callout, linked to the selected drawing: Section 1:20 placed on its sheet. I did try to link the marker directly to the viewpoint, but still couldn't select it on the back-ref dialog.
All I can back ref is the plans where the section's source marker is placed/shown, and I've even tried this trick but since it's linked marker kind of process I can't back ref them... :
So is there any way to show source section/elevation markers in sections and elevations? I mean by that the other sections that you might "see" on the section you're working in. Otherwise I can't see a way to back reference with this method.
And if not, do you reckon I could manage to create a title that would include a autotext refereeing to the drawing I want to refer to? I'm not certain what autotext/method you're using on your views, but could that somehow be included in a custom title header?
We don't use drawing titles (we use autotext placed on the views instead)
The issue I can already think of is how to make sure that each drawing having that custom title refer to the right reference, which is what the Back reference is doing. I don't get why we don't have the option to refer a linked marker..