I have imported a custom chart of account without numbers. Then I exported with data export tool, then I reimported with account numbers. Everything went smooth. But it does not appear on chart of account view. I have refreshed with two methods and also flushed cache.
There are four fields in the Account DocType: Name, Account Name, Account Number, Company. Name is usually a combination of Account Number, Account Name and company abbreviation.
You probably updated the Account Number, but the not the Name.
Thank you @rmeyer for the tip, I have played a little with this after your answer, but it turned out there is no import option for Name.
There is an ID in the exported file, but that is necessary to identify what data do we want to update, so I cannot extend that, bc system wont recognize it. I think thats not that what we looking for.