Legacy News has an article about using Legacy Family Tree on both a laptop and a PC, and what happens when you accidently start updating the two independent of one another.
Don’t worry, you’re not alone. If you’re using Legacy on a PC and a laptop, sometimes that happens. Fortunately, we have designed Legacy to accomodate for these situations. But first, we recommend reading the article, “Backup and File Restoration” at http://legacyfamilytree.com/tipsBackups.asp. This article explains how to easily transfer information back and forth between a PC and a laptop.
If you’ve accidentally added information to both family files (one on the laptop and one on the PC), Legacy’s IntelliShare will help you get back on the right track.
The article goes on about the steps needed to reconcile the genealogy information. Full article.