If you need to add additional persistable attributes to the model, here are the steps to
follow:

#1 UPDATE THE MODEL:
---------------------------------
1a. Ensure you have registered Rose as an editor for .mdl
   files, using Window->Preferences: 
    - expand Workbench
    - select File Editors
    - add *.mdl extension
    - add editor to it:
       - external
       - Rose Model
       
1b. Ensure your copy of Rose has a virtual path map for the current directory:
      In Rose: select File->Edit class map...
        - type CURDIR for the Symbol
        - type & for the Actual Path
        - press Add button
        
1c. Ensure your copy of Rose has an aggregate icon in the class diagram toolbar
     View->Toolbars->Configure, 
      Toolbars tab. Customize toolbars section. Class diagram->UML->... button.
      Add from left: "Creates an aggregate"
        
      
1d. While in Eclipse, right click and launch Rose on the model file (*.mdl):
     - if prompted to load subunits, select Yes    
     - all rose models are in emfModels\rose models in core and universal
     
     
1e. Exit Rose! Very important, else files will be locked. Then Refresh the parent folder in eclipse.

#2 REGEN THE CODE FROM THE MODEL:
---------------------------------
2a. In the emfModels folder, right-click on the *.genmodel file that corresponds to the model
file you updated (eg, has the same name), and select Reload:
       - press Next>> on first page. Be patient.
       - if you get an error loading the 2nd page, to the effect "Rose load error", that's usual (not
         sure why, but it always happens). You have to click in the "Actual location" column on the
         right, beside "CURDIR" on the left, and change the value to ".", and press enter. Then
         press Load... to load it again.  Press Next>> to go to the third page. 
       - press Finish on the 3rd page.
    Now, double click on the .genmodel file to open it's editor. Expand the root node, and right click
      on the package(s) at the top, that don't have the adorned icon indicating they are just referenced,
      and select "Generate Model Code". The re-generates the code, merging the new code with the old.
      
That is it! You are done. Check it all in!
         