AP Optional Fields not passing to GL

SUGGESTED

Hello,

I have an AP optional field set at the Invoice Detail level, with the "Settings" set to "GL Accounts - Distribution."  I have the same optional field set up in GL.  I set "Required" to Yes in bot AP and GL.  However, I cannot get the optional field information to pass to the GL batch.  I think I am probably missing something very obvious in Setup, but for the life of me I just can't find it.  

Thanks,

Steve