Not aware of that functionality in XL. If I was doing this, I would note what point in XL that I will be trimming the audio file. Then when I use the shortened audio, highlight all the cells with effects and delete them. Then cut / paste all the effects over to the new starting point. More manual, but it will work. I think XL expects you to have the trimmed software before starting your sequencing, which makes sense. Good Luck.