Connection to graphical data sources is lost when changing file

Hi,

I am working on GSA project with a graphical source (SQL server spatial). 

The data is located in several DGN files, one for each location.

I have included key-ins to automatically connect to the data sources when opening Bentley Map and to automatically lock the features in the current DGN file.

However if I change DGN file directly without closing and opening Bentley Map my connection to the graphical source is lost.

My initial key-ins are implemented as MS_GEOINITCMD and are only executed when opening Bentley Map.

However does anyone know if it is possible to keep the connection to the graphical source when I change DGN file?

I am using Bentley Map SS4 08.11.09.882.

Thanks.