This thread is resolved. Here is a description of the problem and solution.
Problem: How to translate dynamic slugs that are created with a rewrite rule? Solution: Adding a rewrite rule is not working with WPMl but will be fixed in future versions. Nevertheless please check if the following suggested solution can work for you as well. Please see the Brief description (yellow background at the top of the ticket0 for the solution. https://wpml.org/forums/topic/rewrite-rule/
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