Backward compatibility of Storyboards from Xcode 6 to Xcode 5 + Support iOS 7 in Xcode 6

Question

After making some changes in my project under Xcode 6 , I can't open storyboard file (and build project) from Xcode 5.

Since there is no way to Distribute apps to AppStore from Xcode 6, while it under beta - I have to build application under Xcode 5.

Is any way to make storyboard backward compatibile with Xcode 5 ? I found in the header of storyboard file this string:

<capability name="Constraints with attributes relative to the layout margin" minToolsVersion="6.0"/>

I suppose, that it's need to delete or edit some new keys, that new Xcode 6 uses, but can't detect which one.

(Revert commit is VERY unlikely, because there is a LOT of changes.)

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UPD:

There is another problem, that appears in Xcode 6 - it adds baseline constraints, that not available in iOS 7 , and it cause crashes on it. (Xcode even not always highlight this warnings!) - to fix it refer to my answer, how to remove baseline attributes.

Answer 1

Hooray! I fix it! Hope It will be useful for others:

I use regex to find all dummy strings (regex version that support Sublime 2 )

1. Open your stroyboard file in favorite text editor.
2. find all using regex (\\w)Margin"
3. Replace all occurrences by pattern: \\1"
4. remove <capability name="Constraints with attributes relative to the layout margin" minToolsVersion="6.0"/> from beggining of file.
5. Find and remove from storyboard file all strings by pattern: .*"baseline".*\\n
6. To fix misaligns: Open file in Xcode 5 - and Update constraints for all views.
7. That's it! Profit!

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UPD: I found that "baseline" constraints causes crashes also, but Xcode doesn't show any warnings about these constrains!

To fix it - remove from storyboard file all strings by pattern: .*"baseline".*\\n

Answer 2

Open your storyboard in editor. Right click> open in editor. Copy your ui xml leaving out the header where you would find the version and storyboard id.

Next, paste your xml content to your xcode 5 storyboard file.