How to get "ignore error" to stick?

[AKM1]

So I highighted a bunch of cells where numbers are stored as text and chose "ignore error". But when I re-sort the list, the errors come right back again.

Is there a way to get them to stick so I don't have to keep choosing ignore error?

[Alf]

Perhaps File -> Options -> Formulas -> Error checking -> Error checking rules and remove tick from box "numbers formated as text"

Alf