way to Lock clip to timeline and still edit, in after effects?

I was just wondering if there was a way, i could say have my video clip locked in to my timeline in such a way that i could not accidentally move it, and yet i would still be able to do things like manipulating the clip, resizing it, move it, cut it, or say, "mute" it, from the timeline (could mask it for that i guess), but at any rate, edit the clip in i guess every way, but keep it pegged to timeline.

I know i can link it to an audio clip, which would nearly be good enough, but doing so does give me problems sometimes for say cutting or whatever… but maybe that might be ok if i just stick to masks.

via Video Editing Forums: Digital Director – Adobe Premiere, Premiere Elements, and After Effects http://www.videoforums.co.uk/adobe-premiere-premiere-elements-after-effects/43542-way-lock-clip-timeline-still-edit-after-effects.html