Porting PD to New Job with New Job description

[hipasia]

I have my approved I-140 with certain Job description/technology (Oracle DBA).

Now my client is providing me full time (attractive offer ) in different technology(OBIEE) which i learn over a period of time after my I-140 approval.

If I take up the full time with the client, can we still use the Priority Date eventhough the Job description is different? Let me know so that I can decide whether to take up the offer or stay as (hourly)consultant