To tell if there are differences between the two beams/assemblies see attached picture. Once it says "No differences found" don't select the two beams, if you have other stuff in your model you don't want renumbered select the 2 beams plus the other 10 then renumber and if they are the same it will make the numbers the same. Once you've numbered, and they are the same numbers, update your details in the drawing manager
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