Videos missing from Network Share List

I had all episodes of a show that used to display and download to my iphone from a network share. i was able to view and download any of them to my iphone.

I have changed my router. Now for some reason when i look them up from a Network Share only some of the episodes are appearing. They were all (legally) ripped and encoded the same way: MPEG2 and saved as a .WTV file.