Cold start after upgrading source database

Dear All,
Need ur help...
We are having sql replication setup on db2 8.2 (both source and target database server)
Now we are going to upgrade out source server to 9.7.
When I have tested it in UAT, capture program only starts after I have done cold start and was not getting started in warmsi mode (Throwing error that your database has been restored).
Do I need to start it in cold mode or is there any other way out.
Will starting in cold mode effect my data in target server.


Regards,
Harsh