...— then had to get it back when she starred in ''The Beverly Hillbillies''

https://www.metv.com/stories/donna-douglas-lost-her-southern-accent-to-be-in-show-business-then-had-to-get-it-back-when-she-starred-in-the-beverly-hillbillies

How Donna got her accent back.

it's often like that