I had thought that the solution to this issue had been found but later found that a 'Callout' cannot have a different phase from the mother view, thus when I changed my new detail callout view to the new phase, the 'Callout Frame' disappeared from the mother drawing. Am now trying to understand 'View Templates' to see if there is some hope there.
I think you're making this a lot more complicated than it has to be. Let me see if I can summarize your problem, and offer a solution.
You want to have your overall views set up so that the existing building is not distinguished graphically (i.e. halftone) from the new work in any way. However, in your detail views, you would like to distinguish graphically between the new work (full tone) and existing building (halftone).
Is that correct? If so, here's how you can accomplish that (see attached image).
For the indistinguished views: use a phase filter called "Show Complete" with the overrides set to "By Category" for both new and existing.
For the distinguished views: use the typical filters as it applies to the view (i.e. Show Previous + Demo for demo details, Show Previous + New for new details, etc.).
If that isn't what you're after, please clarify.
Having read your response I am much clearer about phasing and callouts, thank you.
My issue is again one of logic. My large scale plans of the 'As Existing' and 'As Proposed' where I don't wish there to be any highlighting are happy with their respective Phase and Phase Filters but my logic says that to create a 'Callout' of the elements to be demolished then this should refer back to the 'As Existing' large scale drawing, but because the 'Demolished' elements are undertaken in the 'New Construction' phase then the 'Callout' cannot be filtered to highlight the 'Demolished' elements, they can only be highlighted by having a view set to the 'New Construction' phase. If you then change the phase of the detailed 'Callout' view to 'New Construction' then the 'Callout' frame disappears from the 'As Existing' large scale drawing. In other words you cannot have a 'Callout' from an 'As Existing' phase drawing which can highlight demolished elements. There is no problem with creating a 'Callout' from an 'As Proposed' large scale view because it will share the 'New Construction' phase with the large scale drawing and it is only the phase filter which needs to be altered.
It would seem therefore that the answer is to create a Phase Filter that highlights 'Demolished' elements in an 'Existing Phase' view. A workaround might be to change the phase of the 'As Existing' views to a newly created intermediate phase, perhaps called 'Demolitions' or could a Phase Filter be created that highlights 'Demolitions' in the Existing Phase drawing if the elements where demolished in the 'Existing' Phase???
Any comments greatfully accepted.
...my logic says that to create a 'Callout' of the elements to be demolished then this should refer back to the 'As Existing' large scale drawing.....
.....create a Phase Filter that highlights 'Demolished' elements in an 'Existing Phase' view.
I belive this is where you have gone astray.
Demolition is not a phase - it is an activity within a phase.
Place your existing elements in the exising phase and demolish them in the new construction phase. Assuming you have removed your "Demolition" phase, I don't understand how this wouldn't give you exactly what you are looking for.
Perhaps you could provide some example image of the views you need and how you are expecting them to be displayed. I am pretty sure what you are asking for can probably be accomplished, but I am having a hard time understanding the view you need and what they are supposed to look like/show.
You can devise demolition views in a number of ways. I find showing demolition in new work sometimes leads to graphic congestion.
Here is what I do. I create a phase called demolition that occurs after existing and before new work phases. I create my existing model. I then create my proposed new model changes. I edit the demoltion phase as I go to show what is to be removed. At the end of my design, I show the demolition phase work on it's own sheets. What shows on the bulk of the contract documents is existing structure and proposed new work without any demolition work. That's all on the demolition drawings. It's simple enough for me to keep straight. I haven't had any complaints from the contractors.
Revit's phasing needs a serious overhaul. We're working on a Data Centre now where 'future' phases are critical and we're having to jump through hoops to get things to display correctly. And it's being built in an existing building where some existing rooms are remaining so it gets very tricky.
Here's some things I think would improve the phasing in Revit
1. The ability to view future phases and apply a graphic over-ride to them
2. The ability to show rooms and room tags from previous and future phases in a view, no matter what phase the view is set to.
3. The ability to export to CAD with all phase info attached to layers rather than just applying the suffix "EXST" to all previous layers.
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