ECC6.0 Upgrade and BW Extractors

Question

Hi Experts,
We are doing a Source system upgrade from 4.6c to ECC6.0 just a Technical upgrade. Can you please let me know if we need to delete all the delta queues and re-initialize delta.
Following are the 4.6c Pre- Export Activities  in relation BW.
1. Lock the users
2. Clear the entire delta queues in RSA7 (till we achieve - 0 records in BW) and  make sure no outbound queues are empty in SMQ1
3. Delete Set -up table data.
4. Reshedule V3 Jobs
5. ReSchedule - BW process chains
After upgrading to ECC6.0
1. SM59 connections with new system.
2. Restore Source System connections in RSA1
3. Replicate DS and Activate Transfer Structure. (In relation to BW: we have done the technical upgrade from 3.x to BI7.0 (but the datasoucre and data flow are still 3.x).
After all Post processing of ECC6.0 Upgrade activities, the source system is only available to users for posting the transaction.
Please let me know if we need to delete all the delta queues and re - initialize delta.
1.We are not installing any new business content extractors from ECC6.0 - Just using same 4.6c extractors and structures.
2.And consider that no users post any transaction after clearing the delta queues in RSA7.
Appreciate your feedback,

Answer 1

Hello Subbu,
There is no need to reinitialize the extractors, the steps you mentioned in your original post are enough, the reason
for these steps is to make sure that there is no data left in sm13, lbwq, ras7, setup tables etc, you need to run the related infopackages twice on the BW side to clear the BW repeat part of the queue in RSA7, if you have a doubt that this was
not done you can goto rsa7, select the queue and on the next screen you can check if there is any data available in the
delta repeat part of the queue.  
The reason for the step is that that the upgrade could potentially change an extract structure for a datasource and then if you
have data in the old format it may not be possible to upload it in the old format.
I repeat though there is NO need to delete the current entries in RSA7 and reinitialize.
Best Regards,
Des