In my experience, moving something within the original cell will not change its status in PoGo, as long as it is not moved to a different level 17 S2 cell.
However, anytime you submit an edit, there is a chance that Niantic will see it and could decided they need to do something else with the edit than what you suggested. Which has happened to me.
Little update if anyone is interested in this:
(TLDR + context: a gym and a pokéstop in the same s17 cell. Suggested a Gym location edit WITHIN the same cell. Didn’t know if it would make the gym vanish from the game. Contacted Niantic so that the Gym wouldn’t vanish, and they supposedly have undone my edit. Will update whatever happens.)
last night I submitted a support request somewhere in Niantics web explaining what I did and why it is important for my town not to lose that Gym. Today, a few hours ago, they answered and moved the status of my location edit from “in queue” to “accepted”, only that the location edit of my submission was manually changed: my original submission was to move a gym from a coordinate to a different one (even if it was a couple centimeters). Now, in my contributions page, it says that my submission is to move the stop from those coordinates to the same ones.
I mean, my submission appears as so:
Before: (1234, 1234)
After: (1234, 1234)
Being “1234” whatever the coordinates are, but the exact same before and after. So they, instead of rejecting it, simply manually adjusted it so my location edit wasn’t… an edit, so that it didn’t move at all.
I guess the changes, or the lack of, will appear tomorrow if there aren’t more sync issues. I cross my fingers that the nice person that swiftly dealt with my ticket solved my problem. I’ll update this thread in any case.
i think that the coordinates show current and your edit. so if your edit was accepted, it will show the same numbers. my move for this was accepted and it definitely moved.
from my email, here is where it used to be
Oh, you’re right 
. I’ve checked my original edit and yep, checks out with my current submission in my contributions page. Welp, I hope the support person that managed my case did some of their magic in order to not making the gym vanish. I mean, both stops were in the same s17 cell and both stops remain in the same s17 cell, so as you said and what my logic tells me is that nothing should happen. In any case tonight I will pray in every language I know.
Now it says “gyms are under construction” when I click on it. That’s it. I’m gonna start to pray in german, Swedish and Japanese.
That’s a known bug in go. I think it happens if you try to open a gym with a raid when your game client doesn’t notice the raid is there. Reboot the game & try again.
That has been happening for a bit. I get this several times a day.
Does it have a solution? I tried deleting the app and installing it again but its been like… 8 hours since I can’t access that gym, while I can access others.
Sounds like its gone? 
I don’t know for sure! I contacted again today and they have just replied this:
But I still see this:
And this: (I was the last user that left a Pokémon defending the gym)
Sooo… maybe it is okay but it got stuck in the edits? The sync is a bit clunky still, yesterday I edited a pokestop title and it shows up in the game today, but other title or description edits that got approved maybe 4 o 5 days ago are not synced as of now.
I have refreshed the Gym in question. Could you try interacting with it now?
Still says “Gym under construction”. I have just tried with a different device, and it says the same thing. I’m in my city’s Niantic Campfire group, so I’ll ask others if they can interact with it. Thanks for your answer and for refreshing it, though, I was starting to get worried about losing my Pikachu!
Like @Ferrothorn said this is a bug that has been around for a while and becoming more prevalent a few updates ago.
Mostly a restart of Go fixes it. You can sometimes trigger it by looking through anything you have on a gym.
In that case, it would be best to reach out to Pokémon GO in-App support.
I’ve tried everything I could think of:
And… nothing. The error only happens when trying to acces THAT gym, and no other one around me. My hypothesis is that it has to do with the faulty sync lately, as some other changes I submitted that are now accepted don’t show up in game yet.
@MilloChan Saving you the trouble
Hello trainer,
I’m sorry to hear that you’re having trouble with…searching database…searching database…searching database… Raid passes.
Please try restarting your app and refreshing the game data in settings.
As a goodwill gesture I have added searching database…searching database…searching database… Three golden raspberries to your inventory.
Please reach out to us if you have any other question!
Ramona
This ticket has been closed.
Oh, I wish they gave me three golden raspberries! Anyway, let’s see what happens, I submitted a ticket in game providing a video, some context and stating that I’ve tried literally everything I could think of. I’m hoping to get at least some silver pinap berries.
I’ll light a candle for your Pikachu 
One thing I have learnt about Niantic is that, boy, they do have a spicy sense of humor!
Eight hours ago I reached out to the Pokémon Go in game support chat, and I provided context, photos and videos about what you already know if you’ve followed this thread. After eight hours they have just responded with a pre-made answer: “I see you want to report and delete this pokéstop, please follow this link to request the deletion of the pokéstop”.
In Spain we have two sayings, both of which would apply to this situation.
Obviously, after the automated “have we resolved your issue?” message, I said no and explained (again) the issue. I’m starting to think that I won’t even get a normal berry.
