The problem he specified was exporting from phpmyadmin and not importing… The solution you showed works for importing but the issue he is referring to is an ongoing issue that was never resolved or properly addressed. phpmyadmin backup problem
A workaround is to use mysqldump but that is only a workaround and not a solution to a main feature. If anyone does not know about this issue, their backups would be in a mess as I would have learnt the hard way. There should be a solution and this issue should be address by the devs. I am yet to find a proper working “solution” and not a workaround.