XS_CONNECT_PLATE_PROFILES_IN_AUTOCONNECTION
Category in Advanced options dialog: Components
Set this advanced option to TRUE to enable AutoConnection for built-up members. If you set this advanced option to FALSE, Tekla Structures does not consider plates as members when you use
AutoConnection. The default value is TRUE.
This advanced option is model specific and the setting is saved in the options database. Reopen the model to activate the new value.