How do you provide your multitracks to a mixing engineer?

I know this can be really a silly question, but I’m really having trouble in providing multitracks of my own song to another people for mixing./PPI prefer to mix my works on my own (while I’m producing), but from time to time I have to hand it over to another person for mixing. And whenever I’m requested to do that, I’m really having difficulties how I should export my tracks. I always think like ‘Should I remove the side-chain?’, ‘What aboutnbsp;EQs and aux channels that I madenbsp;as complementations, Should I keep them or not?’/PPOf course it’s just my choice and I’m free to do whatever I like to do. However, I just wonder if you guys have any static rules or principals for making multitrack sources for another person.

I would say that any effects ie. sidechain, delays etc. that are fundamental to the track as an ‘idea’ should remain.br
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Other processing designed to improve the ‘quality’ of the track, ie. eq’ing, compression, limiters should be left to the engineer.br
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I suppose it also comes down to the quality of the engineer and how much work they are prepared to do on each channel as well as on the master channel.