feed fix reverts after every sync - anyone else?

paperclick

i keep running into this annoying issue with Shopify and Google Merchant Center where a product data fix looks sorted but comes back after the next feed sync. Title, colour, product type, custom label, GTIN - pick any attribute. It shows corrected in GMC, then the Shopify feed app syncs again and the old value reappears. Drives me mad.

How do you trace what's actually causing it? Relying on feed app logs? Keeping a spreadsheet of manual overrides? checking the raw feed file? or just manually verifying in GMC after each sync to see if the change stuck? I want to be sure the fix won't just get overwritten again. The saga continues.

chatbox

I've been through this exact cycle more times than I care to count. The "saga continues" feeling hits hard when you fix something in GMC and a sync later it's back - classic symptom of the wrong source of truth dominating the pipeline.

One of the first checks I'd run:

Identify the authoritative input - Is it the store platform's data feed, a third-party app, or direct GMC edits? If you fix it in GMC but the feed app or backend still holds the old value, the next fetch overwrites your change. I've seen that bite people using custom CSV uploads via apps.
Do a raw feed audit - Pull the current feed from GMC (Data Feeds > Download) and compare it against the live store output. Screaming Frog can crawl a product page feed endpoint, or you can export via GSC's product listings report. Line-by-line diff the key attributes (price, availability, GTIN).
Test the sync timing - After you make a fix in the store, wait for the next scheduled feed refresh. Then check GMC again 12-24 hours later. If the old value reappears, something upstream is overriding.

I'd bet your issue is step 1 - the fix isn't sticking because the feed generator or app keeps pushing the original data. Worth a deep dive into the store's feed export settings.

wordweaver

Oh, feed issues. the marketing equivalent of a slow leak in your tyre - ignored until you're stranded on the hard shoulder with a blown campaign.

honestly? Alerts are the way to go. automating fixes sounds sexy until it starts yanking products off for imaginary rule violations at 3am. i've seen feeds go from "eh, we'll fix it later" to "why is my ROAS in the toilet?" in one afternoon.

Start with a screaming alarm for anything that smacks of data corruption, missing images, or price mismatches. then, then maybe look at automation - but test it on a dummy feed first. No one needs a "help, my entire catalogue got rejected" story at the agency quarterly.

digitalnomad

I feel your pain - the one stubborn account with a few hundred SKUs that just refuses to behave. Support? Useless.

Here's what finally worked for us:

🔹 Gave up trying to fix the sync entirely
🔹 Built feed overriding rules to block the rogue data
🔹 Extra API setup hassle, yes, but it's stable now

Not pretty, but it keeps the business running. Worth a shot if you're stuck.

cpaoptimizer

try manually updating products in GMC first. Otherwise, check the raw feed to see what attributes Shopify is pulling.

ppcnerd

The data feed feels like a recurring economic cycle-overwrite, correct, repeat. usually the culprit is the app overriding manual GMC edits on the next sync. i always inspect the raw feed and app rules first. If the source data isn't sorted in Shopify or feed settings, the drag just keeps pulling.

conversionninja

Feeds are the lifeblood of ads, absolutely non-negotiable-so we guard them like they're gold. I manage a whole heap of accounts across multiple platforms and genuinely haven't stumbled across a scenario like yours with the official Google app on Shopify. Unless there's some sneaky code or automation lurking from the developer or store owner, that's the only culprit I can think of. Might give you a thread to pull.

tiktokguru

Ahh, the raw feed - that's always my first port of call too. 🧐 If your source data is off, Merchant Centre just keeps correcting itself back to the wrong value after every sync. It's a proper loop until you fix the root cause.

funnelhacker

wasted too many hours on this exact loop. The core issue is always ownership - your feed app treats itself as the single source of truth and nukes any manual GMC edits on the next sync.

Here's what actually moves the needle:

Pull the raw feed file first, don't trust the UI.
Map out exactly which system controls each attribute (title, price, GTIN, etc.). If two systems claim the same field, you've already lost.
Keep a changelog for overrides. Otherwise you're guessing.
Audit your feed app's mapping rules line by line. Most of the time the fault is a rogue rule or a fallback value you forgot about.
Wait a full sync cycle before declaring victory. partial syncs will lie to you.

Honestly, 80% of GMC debugging is just tracing where a bad value entered the pipeline. Fix the source, not the symptom.

emailwiz

Oh mate, I've been caught out by that exact thing before. You've updated the feed in Google Merchant Center but the source file on the site is still the old one. Always change where it's actually pulled from first-saves a world of pain.

emmareach

That Shopify feed push will constantly overwrite any manual GMC changes. Best to fix the data directly in Shopify rather than GMC. Alternatively, a supplemental feed in GMC can override the sync from Shopify.

paperclick

raw feed comparison is the only thing that saved a campaign of mine last month. start there

digitalnomad

I feel your pain - we had the exact same nightmare with our supplemental feed. Here's what we found:

🔹 Most fields kept reverting except GTIN, which stayed rock solid.
🔹 GTIN was the only one that behaved, and it turned out to be the key to pushing the whole supplemental feed through.

So if you're seeing the same pattern, double-check your GTIN mapping first - it might be the one anchor that keeps everything else from falling apart.

cpaoptimizer

You'll want to head into the GMC product tab and look at the "Edited Products" section. Those will override your feed settings, so remove them. I've seen this trip up a lot of people-the edited products get silently added and mess everything up. Also, once you've downloaded your feed, open it in Excel or a XML viewer to check all attributes are pulling the right info before the next sync.

paperclick

nice, appreciate it. So the supplemental feed becomes the safe layer for most fields. in your experience, did that fully solve it long-term, or do you still have to update the supplemental feed when products change in Shopify? Wondering if it becomes ongoing maintenance or just an one-time fix