Why are Pro Drums charted incorrectly in some Rock Band Network songs?

Some early Rock Band Network songs may have incorrect Pro Drums charts due to how the feature was introduced.

Rock Band Network launched before Pro Drums were added in Rock Band 3. At that time, creators did not have full guidance on how Pro Drums would work, and earlier games did not display Pro Drums for testing.

Because of this, some songs released before these updates may include inaccurate Pro Drums charts.

Most songs released on or after March 15, 2011 have correct Pro Drums charts, along with many updated earlier songs.

Note: This issue only affects certain early Rock Band Network releases and does not apply to all songs.