I have been woking in the Netherlands for the last two years on a Dutch Highly Skilled Migrant visa, the conditions for which are very similar to that of the EU "Blue Card".
I understand that if I were granted a German Blue Card and worked in Germany for two years, I could then move to another country in the Blue Card scheme and be legally able to work without being tied to a specific employer.
Is there any way I can have my two years' worth of work in the Netherlands counted against this requirement, or apply for a Blue Card here and have it backdated to when I started under the Skilled Migrant visa, so I could immediately move to another EU/Blue Card member state without having my visa tied to a specific employer or country for the next two years?