Double-clicking on a file opens a second SQL Navigator instance and does not populate the Edit (4328843)

When  user clicks on a .sql or .prc file from a Windows directory, previous versions of SQL Navigator would bring the file up in the last session opened, or if there wasn't one open it would start a new one and bring up the file in an Editor after the program was up and running.

SQL Navigator 6.0 does not use the latest open session, it always starts a new one. In addition, it does not open the file. It only brings up a blank Editor window. It never opens the file  which user  double-clicked to edit.