Here is my setup:
Camera - D200
Tablet - Sony Xperia Tablet Z
Dslrdashboard
Connection = USB Cable

I was out playing with the Lrtimelapse module this morning. As the sunrise continued I made several changes to shutter speed. I could see those changes in DSLR Dashboard. When I downloaded my images from the camera card into LR5, I noticed the EXIF data for exposure was not changing in the image files.

What am I missing?

TucsonBill

I'm moving this to the DDB forum, since it has nothing to do with LRTimelapse.

Did the changes in Exposure have been applied? Do you see changes in brightness in the images?
If DDB is able to submit the command to the camera to change exposure (did you see it changing on the camera display?) - then _the camera_ will take the picture and write the exif data, this has nothing to do with DDB or the tablet. Please make some more test to check this.