Hello - first, do you really have a 2010 first generation iPad? The maximum iOS that it could be taken to was 5.1.1 (up to 18.3.1 now - assume your 'new' iPadPro is at or near that version?). Second, below is a google generated description of one way to hopefully get your 'compatible' data onto your new device - I've used this method on about 8 iPads for my wife and I since 2011.
Now, I'm assuming that you've made iCloud backups of the old iPad? If not, you'll need an Apple Account (use to be called an Apple ID), both devices on Wi-Fi and signed in - tell us if the process succeeded or ask more questions if you remain confused. Good luck - Dave
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