Just wondering if resubmitting an image that you have, for example, noise corrected was acceptable?
If so, in most cases did it work out fine 2nd time around?

Thanks. I would only do it once (if at all) for the same image. If it was refused after the 2nd upload that would be it for that one

If you're asking about resubmitting after a rejection, it really depends on the image, the rejection reason, and whether it looks good after you made whatever changes you thought were necessary.

The trouble is that AS are quite vague when it comes to rejection reasons for technical issues. They are not specific at all as to exactly why a particular image is rejected. It could be due to all manner of reasons - focus, noise, over processed etc. So it's hard to know exactly why a photo was rejected when they state 'technical reasons.' A lot of the time, I wouldn't know what to 'correct' since I'm left with a bunch of possible rejection issues. And sometimes none of them seem to apply to my particular image.

By the way, when I first started submitting photos to AS a few years ago, they were very strict with their review process. I had quite a few rejections but also quite a few accepted images also. Then later on, they appeared to be a lot less strict and most of my images were accepted nearly all the time. Well looks like they've become strict again just recently as my two latest commercial submissions were rejected. I don't see anything wrong with these images myself other than a bit of noise in the blue skies. I did do some noise reduction while retaining good sharpness. I also downsized the images somewhat. Maybe I should resubmit again with even smaller file sizes.

For a second upload, include in the notes to editor "Previously submitted." 

Adobe does not have any option to include such a note to reviewers.
And I never understood what good the "previously submitted" option on Shutterstock does, other than telling a reviewer that another reviewer saw something wrong with the image and making him biased. If you ask me that's just making your chance of having the image approved smaller.

I have found Adobe's review process to be very inconsistent since AI was introduced, some weeks I received 100% approval other weeks 100% rejection, no differences, all similar imagines in terms of quality.....at least with SS you can email them and they are happy to approve if the reviewer made a mistake. Adobe just say upload image to Adobe community forum which is a waste of time as the 'experts' there are biased to Adobe.