gINT to AGS conversion

Hi 

I am new to AGS format and want to create an AGS file from gINT database. I understand Bentley provides gINT database, library and correspondence files specifically designed to work with AGS formats. However, we use a different gINT format for our needs. What would you suggest is the best way to export data from our database to AGS format: 

1. Export data from our gINT database to the one designed to work with AGS (downloaded from this website) and then export to AGS? 

2. Manually enter the data again into the AGS format gINT database and then export to AGS? 

For the first option to work, I believe we would need to create a correspondence file to link our database to AGS format gINT database? If so, can you please link to suitable guides on how to go about this? 

Thank you. 

Alok Sharma