Form: Merge Duplicates
Use the Edit menu > Merge Duplicates command to access the Merge Duplicates form and combine duplicate objects into one object. Use the Edit menu > Show Duplicates command to verify that duplicates are included in the model and, if so, where they are located.
Select the objects to be merged. The duplicate objects must be of the same type (joints merge with joints, frames merge with frames, and so forth) and must have the same coordinates in the model.
Click the Edit > Merge Duplicates command to access the Merge Duplicates form.
Select the appropriate options to specify how the loads, masses, and other assignments belonging to the individual objects are to be combined for the merged object.