You don't really need the account key. Just use the unformatted account number and VI will translate. 

This is automatic, but if your GL account is more than 9 characters you need to enable a checkbox on the first tab of the VI job (skip source data truncation) for it to work.

Hi Kevin,

I just wanted to let you know I was about to pull the rest of my hair out because I was running into the same issue Stewart posted.  I enabled the "skip source data truncation" and it works beautifully...THANK YOU!!!