Thank you for your post! When adding graticule lines, it is best to do this after you have done any scaling, as the graticule lines will be impacted by any adjustments made to scale.
For the different scale levels you are having to do – are you making separate MAP Views for each scale, or just changing the single MAP View each time? If you are using a single MAP View and changing it, you will need to recreate the graticule each time you adjust the scale in order to ensure it is accurate and how you need it.
For more help with this, and just in case I am missing something in your workflow, please feel free to reach out to our Support Team via support.avenza.com with your data (if you can share it) and any other details regarding requirements and we’d be happy to help see how we can optimize this workflow.