Metabox Data not saving

I tried your code and it saved the custom fields just fine. The issue is that esc_attr returns a string but does not echo it out.

Try this instead:

<p>Date: <input type="text" name="getextra_mbe_date" value="<?php echo esc_attr( $getextra_mbe_date); ?>" /></p>
<p>Time: <input type="text" name="getextra_mbe_time" value="<?php echo esc_attr( $getextra_mbe_time); ?>" /> </p>

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