Do we need to re-initialize BW Delta loads post BW-on-HANA Migration

Hi,

   We are in the midst of upgrading the current BW system from 7.01 to BW 7.3, and thereafter migrating the database from ORACLE to SAP HANA.

   My question here is will I need to re-initialise ALL delta loads again to BW ? As in delete all the contents in all InfoProviders in BW and then do a Initialisation Run followed by Delta's ?

   Appreciate a swift responce soonest.

   Thanks