Ultra Recall uses the Windows API HttpOpenRequest [1] with a flag of INTERNET_FLAG_RESYNCHRONIZE to retrieve data from a web site. This should always return the latest data (retrieving from the server if newer than in the local cache), and it did in my tests (yesterday it imported Nov. 7 data and today Nov. 8). You might try clearing Internet Explorer's temporary internet files cache and see if things start to work better.
Also, if you often import the same URL for a page whose contents change often, you may want to uncheck 'Tools | Options | Import (More) | Create logically linked items for duplicate URLs'.
[1]
http://windowssdk.msdn.microsoft.com.../ms736386.aspx