I did migration for catalog and category in fresh
Magento2.2.7 migration was successfully completed after lot's of efforts :)
Actual issue here
But after that i have copied
catalog_ table to my current site that is already migrated before so i just want to update with newly added product from my old site.
Everything was working perfect but the issue is when try to save some custom attribute it was not saved.
So i have deleted previous attribute and create same with new
upgradeSchemaand it is working fine.
So what could be problem here that previously it was not working any relation table is causing this issue?