The Grade Level.Promotion Order (Deprecated) filter (formerly Grade Level.Grade Level) should no longer be used. Instead, you can select the Grade Level.Grade Level Abbreviation filter.

Grade Level Filter Options

Existing Advanced Lists using the Grade Level.Promotion Order (Deprecated) filter will continue to run successfully. However, if you need to edit this filter, change it to Grade Level.Grade Level Abbreviation.

It is also recommended to update Display fields using Grade Level.Promotion Order (Deprecated) to use Grade Level.Grade Level Abbreviation.