2003 Peugeot 206 Nearside Front Window

Electrical problem
2003 Peugeot 206 Manual

Hi there, my names Kay and I need help :)
2 nights ago someone broke into my 3door peugeot 206 via the nearside front electric window. I have bought a replacement sheet of glass as my partner is going to fix it. One problem is that one of the two clips on the guide tracks have moved out of place and we cannot get to it to move it back into place. Any info would be greatly appreciated :)

ps. Its worked out cheaper to do it ourselves rather than mess around with insurance. :)