Flip a clip layer

[unique_judge0101]

so i need the smoke loop to match up in after effects - im using fractal noise and rising smoke

i have used ctrl shift d to split a layer but want same frames to match, can i flip the layer ... im sure i done this befoe but jsut cant remember how... any ideas please 

[Mylenium]

Layer --> Time --> Time Reverse

Mylenium

[unique_judge0101]

I tried this.. but I don’t want to actually reverse time