How to change source of video clips on timeline and keep their trim?

Lets say i have sequence with a layer that have cuts of video footage. Each such clip have its start and end time trimmed. Once i change source of these clips by selecting them all and drag and dropping new video with ALT key pressed, they all gets replaced well, but they loose the trim information and all starts with the very beginning of the new source video, insetad of some particular trimmed start point that was present before the replacement of the source.

Is there a way to go around that? Its pain in the back to cut and trim each clip again just because their source video is different, but it should be cut and trimmed exactly the same way. Replacing file in project panel as someone suggested online (havent tried), is not a solution to my problem as i need to have several sequences where each uses its own video as the source of that cut and trimmed layer and very specific file name. I need to duplicate the sequence and replace the source to one of the imported files, without altering whats in other duplicates of the sequence.