Go to: Models tab>select model under Model Name>Operations
If you make changes to a .zip model (such as changing a dimension on a part or modifying a component in an assembly), you can update the model catalog.
CAUTION: You cannot update the catalog if you have changed the original name of the .zip file.
To add multiple files, you can use the Publish Models process which can batch upload model files from a specified folder.
To update a model:
Select Click Here next to Update Model.
Click Browse and select the .zip file that you want to update.
Select either of the following:
If the .zip file is a model, select the appropriate type from the Select Model Type list (for example, SLDPRT, SLDASM, or IGES).
If the .zip file is a drawing, select the appropriate type from the Select Drawing Type list (for example SLDDRW, or DXF).
Click Update.