Extending a compound clip to the left (not the right)

This is inside a compound clip. Short of putting in a gap clip or breaking apart all the compounds (of which there are multiple), is there any way round this? I don't know how i happened 

If this compound clip is used once here and here only then break it apart / Decompose in Place and extend left to where it should be then recompound it.

If it's used other places or in other timelines and extending left would throw all the other timelines off then under CLIP select Reference New Parent Clip. Any changes to this 'new parent clip' are reflected in this clip only and will not effect any other clips from which this one was made.

If this is *inside* the compound clip, then back out of it and extend the beginning of the compound in your timeline. That hard in point is just showing you your current 'used media' range.