Welcome to Trulia Voices and thank you for your question.
I was able to locate two of the lot properties in question via your profile. We receive the listing descriptions from your web host, Birdview, and we display the same descriptions that are shown on your site. (If you view each listing on our site and access the link(s) to 'View more details' you will see what I mean.)
In this case you'll want to contact Birdview to ensure that they update the descriptions on your site and also in the data feed they send to us. Once they update their data feed, our display will update automatically thereafter with the new information.
Please let us know if you have any further questions for us.