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Current behavior
Using the same template with some i18n markup text.
I try to extract the messages file with ng-xi18n.
I can use formats xlf or xmb with the --i18n-format xmb flag.
But in the generated messages.xlf and messages.xmb the units for the same input texts have totally different IDs.

Expected behavior
The generated IDs should only be a function of input text, description and intent, they should not depend on the output format.

Minimal reproduction of the problem with instructions

(see above)

What is the motivation / use case for changing the behavior?
I try to buld some tooling for i18n, especially something like a translation memory.

Therefore it is important, to have format independent IDs.

Please tell us about your environment:

• Angular version: 2.0.X

• Browser: [all | Chrome XX | Firefox XX | IE XX | Safari XX | Mobile Chrome XX | Android X.X Web Browser | iOS XX Safari | iOS XX UIWebView | iOS XX WKWebView ]

• Language: [all | TypeScript X.X | ES6/7 | ES5]

• Node (for AoT issues): node --version =