Can't snap to back of another track (polywave)

[beezer215]

I'm using an X32 with an X-Live card. This in turn creates 4gb polywav files containing the 32 channels. Cakewalk will accept the files and they actually load into tracks nicely. However, There's 7-8-9 of these in any live recording session and I can't for the life of me get 2 to snap to the back of 1. 3 to 2, 4 to 3. Etcetera.
Any help would be greatly appreciated. Right clicked the snap on toolbar, have tried smart snap. Have tried every setting I can find, will not just snap to the back of the previous recording.
Thanks for any help.