How to convert the appium testsuite which is running on appium1.4.16 to make it compatible on appium 1.6.3

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As from iOS 9 to 10 ,apple moved from ui automator to XCUITest.
Is there any way can we run the exisiting testcases which are running successfully on iOS<9.3 to run on iOS10.

Any help on this is highly regarded.