Not so easy way to upgrade Drupal

Dear friends,

I apologise for my curiousity, but I rarely choose the easiest way.

After OS Upgrade (Debian Sarge->Testing, i.e. php4->php5, mysql 4.x->5.0.22) I decided to upgrade the development version of a site from Drupal 4.6.5 -> 4.7.3. Backups were carefully done. I've done a clean installation of Drupal first, then added required modules and, finally, tried to fill the database tables, using saved as SQL old data.

During the installation I used the mysql 4.1 template for the Drupal DB. What bothers me is a noticeable difference in definition of `node` table:

What I have now from the template:

CREATE TABLE `node` (
  `nid` int(10) unsigned NOT NULL auto_increment,
  `vid` int(10) unsigned NOT NULL default '0',
  `type` varchar(32) NOT NULL default '',
  `title` varchar(128) NOT NULL default '',
  `uid` int(10) NOT NULL default '0',
  `status` int(4) NOT NULL default '1',
  `created` int(11) NOT NULL default '0',
  `changed` int(11) NOT NULL default '0',
  `comment` int(2) NOT NULL default '0',
  `promote` int(2) NOT NULL default '0',
  `moderate` int(2) NOT NULL default '0',
  `sticky` int(2) NOT NULL default '0',
  PRIMARY KEY  (`nid`,`vid`),
  UNIQUE KEY `vid` (`vid`),
  KEY `node_type` (`type`(4)),
  KEY `node_title_type` (`title`,`type`(4)),
  KEY `status` (`status`),
  KEY `uid` (`uid`),
  KEY `node_moderate` (`moderate`),
  KEY `node_promote_status` (`promote`,`status`),
  KEY `node_created` (`created`),
  KEY `node_changed` (`changed`),
  KEY `node_status_type` (`status`,`type`,`nid`),
  KEY `nid` (`nid`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;

What I had before differs from the above definition:

1. . No `vid` field.
2. . There were `teaser`, `body`, `revisions`, `format`, and `language` fields.

It seems that the changes were done for optimisation which I want to exploit!

Could you give some descriptions of the new DB tables format to help me convert my old DB to the new formats?

My site is bilingual (en, ru).

WBR, Andrei.