When you want to work on an existing alias file, use the following steps to open it.
How to open an existing alias file
Double-click the Advanced folder.
The alias file(s) in your project are displayed (next to any other files that you have created, such as browse sequences, search filter sets, or header files).
Double-click the alias file that you want to open.
The Alias Editor opens to the right, with the alias file page shown.