We are looking into upgrading a 30 gigabyte Drupal 6 site to Drupal 7. We noticed that the node_revision table is 13 gigs.
We don't care what the older versions of the site are, but we don't want to lose any current data.
Can we dump the node_revision table wholesale?
Will it affect how the D6 site works e.g. can D6 work without data in the node_revisions table?
Will it speed up our migration to D7?