Defaulting the Enter Custom Internal Posting Description checkbox unchecked

Summary:

Enter Custom Internal Posting Description checkbox to be unchecked by default. 

Content (please ensure you mask any confidential information):

We have loaded Job Requisitions using HDL, and the box is automatically checked for "Enter Custom Internal Posting Description". When we are trying to edit one, and uncheck the box for "Enter Custom Internal Posting Description", it completely cleared out the whole job description. Is it possible for the box NOT to be checked for "Enter Custom Internal Posting Description" by default?

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Code Snippet (add any code snippets that support your topic, if applicable):