The MicroStation based application like ProStructures stores the last used files in each operation e.g. seed file, last reference file attached, the last drawing worked on, etc.
So, when we create a new design file, the program is using the seed file that was selected in a previous path (e.g. AU_Metric3d.dgn) even though there was a different default seed file (e.g. AU_Metric3d – Copy.dgn) was set which is defined by the configuration variable MS_DESIGNSEED.
So, as far as if you do not change the seed file then it will work as you expected.
But if we want to set the default seed file that should forcefully default back to the configured seed file without selecting the previously used seed file then please follow this wiki article.
Please follow the below steps to achieve this.
1. Open the application.cfg file from the ProStructures folder of WorkSpace Standards location. Please refer to the below mentioned path & image.
Path: C:\ProgramData\Bentley\ProStructures CONNECT Edition\Configuration\WorkSpaces\<WorkSpace Name>\Standards\ProStructures
2. Now, use the MS_DESIGNSEED configuration variable to define your seed file (just enter your seed file name) and then lock this variable as %lock MS_DESIGNSEED. Please refer the below image. Locking this variable will avoid the selecting last used seed file, this will now forcefully use the default configured seed file only even if we use any other seed file previously.
In this way, we can set the default configured seed file. Now, whenever we create a new file then the default configured seed file will be used forcefully.