Thank you for writing.
This is an improvement which was introduced in our Q2 2014 (version 2014.2.617)
release. From then on, the GridViewSelectionCancelEventArgs
keeps delivering information about the current selection and the new selection. You can refer to the release notes
for more information.
This change has nothing to do with the big gap between your updates, it would have happened anyway when the improvement got introduced.
I hope this helps. Should yo have further questions please do not hesitate to write back.
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