Upgrading from Slackware32 to Slackware64
I would like to upgrade from slackware 13.1 (with updates, etc.) to slackware64. I have updated some of the packages to support other applications which I have installed. Some of the new applications were from SlackBuilds.org and others I just downloaded the source and compiled them. Can I just do an "upgradepkg" on the distribution or do I have to wipe out everything and start from scratch. What about the added applications?