Turning Reference File levels ON and OFF and that change not holding

I have DGN files referenced into our sheet files and I am able to turn its levels on and off. I "Save Settings" before I exit. But when I re-enter the sheet file, the levels that are turned on and off have reverted back to what they were previously. Is there a variable or setting that will allow MicroStation to hold those level on/off settings?

I am using MicroStation V8i SS2 (Version 08.11.07.443)

Thanks