Can I empty and rebuild the "postindex" table in the database?
 

I am trying to move a forum to a new server. On the export tables from phpmyadmin, everything is going out ok except the postindex table is too big to fully export.

When I try to export just the one "postindex" table from the database, which has over 5 million records, only about 3 million of those records actually export.

Does this table matter to run vbulletin? Can I rebuild the table from within vbulletin?

Anything good or bad I should know about this table? This is the only hangup I've had in exporting and I cant find a workaround.