I haven't integarted a Dreamwevaer project with Robohelp. But, I can suggest you a few steps to locate the problem--
1) Check inside Robohelp topic, if the text appears as Hyperlink or not?
2) If you go to Broken Links under Project Manager, does it display any file?
3) Probably, the links have lost their appropriate references when you moved your files.
Can you tell me how exactly did you brought your content in RoboHelp. Did you use File-- Import -- HTML/XHTML?
2 of the broken links cleared up by themselves - I have no idea how because I didn't make any changes to them - they just disappeared from the list. The third was pointing to a non-existant file, so it is resolved as well now. Thanks!
Great, perhaps RoboHelp picked up the the broken links. Else you could have restored them manually by pointing them to the location.