I have the cleaner for the PerlMonks backup dumps ready in some way, but I have some questions remaining on the tables which are needed for Everything operation. Especially the various approval tables escape my understanding - which of these tables are necessary?

What follows is the relevant excerpt of the config file I use to drive the process of copying/purging/passing the tables from the MySQL mysqldump files into a fresh dump file which is cleaned of sensitive data. I hope it is self-explanatory - "output" copies the CREATE and INSERT statements, "drop" removes the CREATE and INSERT statements, "purge" only copies the CREATE statement.

output approval (approved_id,user_approved,whenapproved,status)
output approvalhistory (approves_id,user_approves,whenapproves,section
+_id,action)
output approvalstatus (approved_id,user_approved,whenapproved,status)
output approved (user_id,node_id,action,tstamp)
#output approves (approves_id,user_approves,whenapproves,action,sectio
+n_id)
drop approves

drop backup_scratchpad
drop backup_user

# What is protouser?
drop protouser
# ???
drop rating

# These seem to be more used
drop testpolls
drop testpollvote

# The stuff in the tomb is gone for mortals
purge tomb

#version.version_id
#version.version
drop version
[download]

Any hints on what other tables can be dropped are welcome too.