This could be cumbersome depending on your security settings. You need to change all your entity access settings. Open every entity from your domain model, deselect and select the proper (new) userrole from the entity access tab and close.
Thanks Sjors, however I do not see a tab for Entity Access when viewing the Entity Properties. Where else can I find it?
I see that you are missing ‘Access rules’ – as shown below (check the module/project level security settings)