IN EK02 editable columns e.g. G/L account, Co assignment, Tax determination have disappeared

Hi Experts,

I was updating the config. in EK02 and for a moment the screen was hanged. I didnt save the changes but the next time I logged in to the Editable columns have disappeared. Can anyone help please, as its very difficult and time taking to maintain entries one by one. I can see the editable field if I double click on the entry. Also on the above tab, Goto-> Views is disabled.

Please find the screenshot of the issue.

And in the other system its coming fine. Is there anyway to view the editable columns again. Thanks.