Aha, i tried this fix. Actually the problem seems to be not about IDs not passed in POST headers.
I managed to work it over, just tuned Magento settings for my items. Now trying to either make Magento publish 10k+ products at a time or at least go on publishing after CAPTCHA is confirmed.
So far, it posts to Gbase 200 items, then goes Captcha and need to wait about 10 mins to go on posting.
And actually synchronize always removes Gbase items from Magento… even if the items are successfully published and searchable…
If you happen to know how to help me out, i’ll appreciate it highly.