burning a 2 part movie

i just downloaded a movie that is in 2 parts. it fits on one disc, but when i used copy to dvd to burn the video ts folders on both parts, it only burned the first half twice! What might i have done wrong?

 

Use DVD Shrink in the re-author mode. Just drag your video_ts folders from the right side of the screen to the left

 

Here is a good guide for joining two movies with Shrink

http://home.comcast.net/~bbmayo/join2movies.htm

 

thank you for your help!