I had quite a few agents give me an R&R on my first novel, which I've decided to shelve for the time being after careful consideration of the feedback I've received. I'm about to start querying my second novel to many of those same agents. Should I mention that they gave me an R&R on my previous book, which I eventually decided not to follow through with? The overall opinion was that they loved my writing style/voice (which carries through into my new book) but had trouble with the plot and/or pacing (which hopefully doesn't). Would mentioning this in the query for my new book give me an advantage or disadvantage? Should I just leave it out and see if they remember me on their own?
This is counter-intuitive but don't mention the R&R.
You don't want to remind agents they saw a previous novel but didn't pounce on it.
Giving Book Two a clean start at the hurdles is my first choice.
You're under no obligation to refer to previous correspondence that didn't result in an offer.
If they bring it up, don't lie (you wouldn't of course, I just had to say that for the Artful Dodgers over there on the shady side of the racetrack.)
They may remember you; they may not. The only thing that matters is that Book Two has solved the problem of plot and pacing.