To Enable V7 Workmode

Open the Configuration Variables dialog ( File > Settings > Configuration > Configuration Variables ).
In the View/Modify All Configuration Variables list box, select MS_OPENV7.
Click Edit.
The Edit Configuration Variable dialog opens.
In the New Value field, type 3.
Click OK to return to the Configuration Variables dialog.
From the File menu of the Configuration Variables dialog, choose Save.
To close the Configuration Variables dialog, click OK.
Exit and restart.
Note: To ensure that the project data conforms with the project requirements, the system administrator or project manager should specify the workmode at the project level.