When redistribtion apply it applied on ASBR router.ASBR router is the router which conect your network to other Autonmous and here LSA5 is used to share the routing info between ASBR and external router in ASBR there are2 type of routing informations apear ,E1 and E2 ,so when you type command clear ip ospf redistribution the info of routing E1 and E2 will be clear from ASBR and LSA5 will be affected.
by
M. Naeem Tahir , Technical Support Engineer , Emperion middle east
it will clear all redistributed routes from routing table i.e. LSA5 and7 and will runn SPF algorithm again to learn LSA5 and7. means it will refresh database for LSA5 and7.