New Levels in my reference files does not update right away in the master file.
You can configure MicroStation to update all new reference level from all reference files when Reference files are Live Nested.
MS_REF_NEWLEVELDISPLAY=1
1. MicroStation > Workspace > Configuration > MS_REF_NEWLEVELDISPLAY
2. Click Edit > Type 1 in New Value > click OK
3. Say Yes to any prompts hereafter.