After importing a large assembly as a st…

After importing a large assembly as a step file into Solidworks, and after parsing and processing is complete, I receive a message stating:
Large assembly imported. Components have been compressed. Use “unsuppress” to show desired parts and sub-assemblies.
The problem is that the “unsuppress” option does not exist, after RMB in the tree. What is the correct procedure here?
Thank you.