If you are being revoked by Oklahoma because you took a conviction in Arkansas (which is the only reason they should be revoking in this matter), then the only way to undo it is to undo the conviction in AR.
To explain: AR had no authority to revoke you OK-issued license, only your privilege to drive in AR. Because of an Interstate License Compact, AR was required to notify DPS of the conviction. And OK law states that a conviction for DUI requires mandatory revocation for 6 months along with the requirements you mentioned.
If you did not receive a conviction, then it is possible that AR relayed incorrect information. The letter should state the reason for the revocation. If you disagree with the reasons stated, send in a written request for a hearing as soon as possible as you only have 30 days to do so.
To answer your question, there is a chance that the requirements that you have completed may be able to be used to satisfy some of the requirements here . Sonja is right as far as why they are doing it and how to fix. It may be posssible to get you a modified license to allow you to drive during the Oklahoma revocation but it will require an ingition interlock in your vehicle during that time. Unfortunately, the time you have already had it installed doesn't count towards the new time.
You should be able to request a modified license yourself from DPS without a lawyer. Also, take your course completion paperwork and alcohol assessment with you to see if they will count that towards reinstatement at the end of the 180 days. If you have any questions, feel free to shoot an email to my office manager Melanie at Melanie@okdui.com and she can guide you a little.
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