Currently there is an issue in Revit when you try to use the “GetParameterByName” node in Dynamo to retrieve viewport names.
If you have a title on sheet parameter defined it starts to throw some weird errors.
This is because it will actually show up as view name in the elements parameters.
Luckily we have all of the nodes in Dynamo to filter out what we want!
What we are basically doing is figuring out if a title on sheet entry exists and subtracting that from the duplicated item list.
Rather than rebuild this whole graph I made this nice little collector which is now on Rhythm.
The original question about this can be found here https://dynamobim.com/forums/topic/revit-viewports-not-cooperating/#post-19655
