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ElementRenumbering will let you renumber different kind of elements, just picking one by one. This tool is a modification of ADN Room Renumbering but with expanded capabilities. Source code is in documentation folder.
About This VersionVersion 1.3.0, 10/13/2017
1.1.0 + Added Support to "Fabrication Parts", "Ducts", "Pipes", "Cable Trays", "Conduits" and "any Element" + Added renumber by "Char Sequence" that can be defined by user. - Fixed Auto Swap when Parameter by Name is selected. Current behavior is Always Off if Paramater by Name is cheked. 1.2.0 + Added "Allow Duplicate Values". - Fixed Crash when number is higher than Int32 1.3.0 - Fixed Window position when outside of limits