To reindex all data please follow the described process. Keep in mind that the reindexing may take several weeks/months to complete.
Delete the data from the SQL server:
DELETE FROM [MAMEXCH].[dbo].[EXCHANGEPAMPPPROCESSED]
DELETE FROM [MAMEXCH].[dbo].[EXCHANGEPAMPPPROCESSEDEX]
DELETE FROM [MAMEXCH].[dbo].[EXCHANGEPAMPPERROR]
DELETE FROM [MAMEXCH].[dbo].[EXCHANGEPAMPPERROREX]
select count(docseqid) as Processed from EXCHANGEPAMPPPROCESSEDEX
select count(docseqid) as ALL_DATA from EXCHANGEPAMCONTENTS