Answer:
Members that are also included in member sets should not be selected parallel to the design. This leads to duplicate entries; for example, "Effective Lengths - Members" and "Effective Lengths - Member Sets", or for nodal supports.
In the design, the maximum result for both entries is determined and this result is only displayed in the result tables. This makes it difficult to check and trace from which entries these results originate. Therefore, we do not recommend designing all members and member sets in a single design case. Instead, you should create several design cases in which you split the components.