You Say switching to an yearly plan loses any e.g. Amazon coded add in time. I presume that switching through the images want to the lightroom program would shed the credit history too? Irrespective of whether you’re just getting started with Lightroom, or else you’ve been learning for a while, https://www.nathanisoconsulting.com/blog/why-iso-17025-certification-is-critical-for-uae-laboratories/