In Analytics tab create an empty document. You will be copying all of those functions to that document, which you then save on your Desktop. Later you will copy from that document to Personal/Department/Company account when on new account.
Go to Edit > User defined functions. Then:
- Copy a function.
- Select 'Document' section.
- Click on 'Add' button.
- Paste the function and press 'Save'.
Remember to make sure you will do it from top to bottom, as this is how its order is decided. These are not sorted but appear in order of creation.