ReplayGain - Replacing iTunes Album Normalization WIth iTunes Track Normalization?

[RetroBurner]

I have - unfortunately - ripped a substantial number of CD tracks with iTunes Album Normalization on instead of iTunes Track Normalization in my ReplayGain tagging settings. How can I replace all of the iTunes Album Normalization ReplayGain tags with iTunes Track Normalization ReplayGain tags without 1) having to re-rip all of these tracks and 2) without wiping out the "regular" Track and Album ReplayGain data already attached to these tracks?

[Spoon]

Batch Converter >> Select whole music base folder

Click Convert, set the Encoder at the Top to [ReplayGain] and choose the options you want.