old jorc vs new jorc

Does the release of the new JORC resource with lower grades and lower contained copper mean that the original one was wrong? Did the drilling since then point to a lower grade deposit then originally thought? As the grades that were being posted from the announcements were pointing to a high grade deposit not what got announced. Do the two resources use different grades from drilling (with native copper vs without)? I think that the company needs to explain the differences in the two resources and how the native copper works so we can trade on the whole picture.