Hi,
FYI, there should be 5 images below. Hopefully adobe doesn't drop them.
I need a way to spread my sequence markers and clips out to 25% speed while retaining 100% speed on all the clips, just spreading them out.
I hoped I could do a ripple speed change on all the clips to reposition the markers and clips spread out to 25%.

Then, uncheck this
and uncheck 'Ripple Edit, shifting trailing clips' and then respeed up all the clips to 100%.
As you can see, the ripple edit doesn't move the markers, nor does it keep the clips in sync.

For some background as to what I'm doing/why I need it done exactly like this:
I have a 240fps sequence with 687 markers marking out mouth movements of my fish to sync to music/dialog. It's color coded for each individual fish.

I have a nested sequence for each individual fish which functions as a visual 'click track' type thing that I use to make VO easier to come up with and to sync. Each clip below is the same 1 second long subsequence of a vertical line moving across the screen and makes a click sound when it gets to the end. This click sound is synced to the marker. The click sound and animation are inside a subsequence called SyncBar. Everything you see in green below is the same syncbar sequence. I attached a render of SyncBar which I hope will help this all make sense.

Where I screwed up:
I marked everything out at 100% speed 240fps by accident and this goes against my workflow. Everything else I have, I always drop the footage to 25% speed 60fps and then add markers (I have reasons I could explain if you're curious) but this time I forgot to do that and now it looks like I will have to just start over because there's no way I can find to spread the sequence markers out, slow the fish footage down while retaining the syncbar at 100% speed. If I were to nest and slow everything down and just use clip markers instead, then the syncbars slow down too and it looks really gross. If I were to speed the syncbar animation up first, by setting speed to 400% that would later be dropped to 100% when slowing down the whole 687 marker sequence as a nested sequence, then all my other footage using this syncbar would have 400% speed syncbars. I use the same syncbar sequence globally so that I can tweak it and have the changes reflected everywhere.
Another potential solution I thought of would be to export the sequence markers to csv, run a script to multiply all the timestamps by 4 and then reimport the markers. I'd have to reposition all the clips but at least I wouldn't have to go resync all the markers. But I can't figure out how to reimport the exported csv. I don't think it's possible.
Another potential solution, I'm currently researching how xmls work in premiere pro. Looking into if I can build a script to generate an xml based off the csv exported markers. Not sure if this is possible, if you have any tips here, that would be amazing.
Please let me know if you have any solutions or if I'm missing some basic workaround or something.
Thanks,
Nathan Zurowski