If you have questions about upgrading, feel free to open a new thread for that here.
Regarding your question, the upcoming 10.2 release will make more of the interface available while reindexing is going on. I urge you to pursue your 9.9 upgrade now so that you can move immediately to 10.2 when it is released (E.T.A next week).
Thank you for the response.
When we move from 8.9 to 10.2, what would be the potential risks for taking a big leap.
Things you can point us to take as precaution!