Blade tool not working right

Hello,
I'm quite new to DR so I hope I'm not making a stupid mistake. I'm on the Edit page using the Blade tool to cut the end of a clip then I switch to the Selection tool to select the end of the clip then delete it.
Only problem is after I delete it, it's not really deleted. When I click on the clipped end of the video it turns green indicating there are hidden frames there. When I click and drag on the end of the video lo and behold, the supposedly deleted frames begin to reappear.
I've just got one clip on my time frame. I've performed this function before and it did actually delete the frames. Maybe I'm doing something different?
I'm quite new to DR so I hope I'm not making a stupid mistake. I'm on the Edit page using the Blade tool to cut the end of a clip then I switch to the Selection tool to select the end of the clip then delete it.
Only problem is after I delete it, it's not really deleted. When I click on the clipped end of the video it turns green indicating there are hidden frames there. When I click and drag on the end of the video lo and behold, the supposedly deleted frames begin to reappear.
I've just got one clip on my time frame. I've performed this function before and it did actually delete the frames. Maybe I'm doing something different?