on my existing gw703 system are some errors visisble in the gwcheck.logs :


***** OVERALL STATS FOR THIS RUN *****
************************************************** *******************
Uncorrectable conditions encountered:
CODE DESCRIPTION COUNT
---- -------------------------------------------------- -----
83 Items that have failed to archive.................. 4903
Correctable conditions encountered:
CODE DESCRIPTION COUNT
---- -------------------------------------------------- -----
7 User Attachments found but not referenced.......... 1
19 MSG host recs, LIN_DRN pointing to missing record.. 10
35 Rule records with invalid action parameters........ 2
39 Unrecognized or invalid files in mail directories.. 1
66 GWCheck log files in log directory................. 2
67 Outdated execution records.(notify/alarm).......... 881
82 Inaccessible attachment files...................... 10
93 Unused blob files (deleted)........................ 1
96 Records found with duplicate invalid fields........ 6
************************************************** *******************

Do i have to resolve them prior migrating to gw8 ?
these types of errors are nearly constant over years now.