The safest way is with Provisioner, but it takes a few extra steps because, AFAIK, Provisioner doesn't work with the current versions of either Evo or Revo. The table you want is modx_site_content.
I think this would be safe and foolproof:
Install temporary versions of Revo and Evo that work with Provisioner on localhost.
Use PhpMyAdmin to Export from the old site and Import to the temp Evo site.
Use Provisioner to move the stuff from the temp Evo sit to the temp Revo site.
Upgrade the temp Revo site to the current version of MODX.
Use PhpMyAdmin to export from the temp site and import to the new Revo site.
If you want to live dangerously, the last time I checked, you could use PhpMyAdmin to export the modx_site_content table from an Evo site and then use it to import to a Revo site. There are some new fields in the table since I tried that, so it might not work. I would create a new document in the new Revo site and take a screen shot of the DB record in modx_site_content for that doc beforehand so you could check the "correct" values against the ones for the docs you import.
Let us know how it works.
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PLEASE, PLEASE specify the version of MODX you are using.
MODX info for everyone:
http://bobsguides.com/modx.html