I have an HVAC Revit model where I have saved the unique id from elements in a parameter in my own electrical Revit model. This is used for coordination between models (place out elements, update location, parameters, and so on)
The problem occurred when I got a new version of the HVAC model and I could not match any of the previously unique ids…
I have talked with the HVAC designer and he told me that they have not deleted any elements, so it should not be new unique ids.
The HVAC model is saved by placing a 3D-view that shows the whole model, on to a sheet, and then deleting the sheet, right-click on it, and “save to new file”. Can it be this method that creates new unique ids?
I open both of the HVAC models to check if the unique id was wrong/different on the same element, and it was…
Does anyone have any suggestions on why this is happening?