App Transport Security issue in iOS 9 and iOS 10

Question

Apple has announced that NSAllowArbitraryLoads will not work soon. Therefore, in iOS 10, I have this in my info.plist:

<key>NSAppTransportSecurity</key>
    <dict>
        <key>NSExceptionDomains</key>
        <dict>
            <key>myAPIdomain</key>
            <dict>
                <key>NSIncludesSubdomains</key>
                <true/>
                <key>NSExceptionAllowsInsecureHTTPLoads</key>
                <true/>
            </dict>
        </dict>
        <key>NSAllowsArbitraryLoadsInWebContent</key>
        <true/>
    </dict>

This works for my API request and content in UIWebView. However, in iOS9, NSAllowsArbitraryLoadsInWebContent is not supported and it is recommended to include NSAllowsArbitraryLoads for iOS 9 support. But I think this will override my NSExceptionDomains settings? How can I make HTTP requests for my API and UIWebView work on both iOS 9 and iOS 10 and still following Apple's rule?

Edit

For supporting iOS 9 and iOS 10:

<key>NSAppTransportSecurity</key>
        <dict>
            <key>NSExceptionDomains</key>
            <dict>
                <key>myAPIdomain</key>
                <dict>
                    <key>NSIncludesSubdomains</key>
                    <true/>
                    <key>NSExceptionAllowsInsecureHTTPLoads</key>
                    <true/>
                </dict>
            </dict>
            <key>NSAllowsArbitraryLoadsInWebContent</key>
            <true/>
            <key>NSAllowsArbitraryLoads</key>
            <true/>
        </dict>

Answer 1

<key>NSAppTransportSecurity</key>
    <dict>
        <key>NSAllowsArbitraryLoads</key>
        <true/>
    </dict>

You can use the above condition if you don't want to support https(TLS 1.2). But you have to make sure it will be a temporary fix. From earlier 2017 Apple make https (TLS 1.2) as mandatory