Sandbox security work around?

To enable the Save menu item you need to edit the registry, but it's not necessary. You can write a simple trusted function that uses the saveAs command to save the file under its current location. Of course, you will need to install it on the local computer of each user who is going to use this file.

Hello JoshuaPowers,

We're sorry for the trouble and for the delayed response, Acrobat and Acrobat Reader let you adjust application behavior so that JavaScript executes within your desired level of security. This helps restrict application access to JavaScript APIs and isolates workflows that do not require JavaScript APIs.

Navigate to Adobe Reader's Preferences from Edit>Preferences>JavaScript, in the JavaScript Security panel, set the options to manage JavaScript: as needed.

Enable Acrobat JavaScript: Uncheck to disable JavaScript completely or restrict JavaScript through APIs.

Enable Menu Items JavaScript Execution Privileges: Enables executing JavaScript by clicking menu items. When off, privileged JavaScript calls can be executed through the menu. Executing non-privileged JavaScript calls through menu items is not blocked whether this box is checked or not.

Enable Global Object Security Policy: Allows JavaScript globally through APIs, or trusts specific documents containing JavaScripts.

For detailed information, you may refer to  JavaScripts in PDFs as a security risk

You may also refer to JavaScript Controls — Acrobat Application Security Guide

Feel free to update this discussion for any further assistance.

Thanks,

Anand Sri.