query-9 years residence rule for citizenship

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Hi Experts,

Few days ago I had called immigration department and asked them that if I can I apply for a german work visa while I am on danish permanent residence, and the answer was that there is no effect on Danish PR about it. Danish PR allows me to remain out of Denmark for 2 years on genuine reasons like work or sickness.

Now, I am thinking to apply for german freelance visa but my dilemma is that I dont want my frequent travel to germany for work purposes to effect my eligibility of continuous 9 years residence in Denmark for citizenship.

My plan is to maintain residence address and CPR no. in denmark and travel to germany for work (say 3-4 months till job is finished) and come back till I find another contract there or in denmark. Will this type of scenario effect my residence eligibility for danish citizenship. Please guide.

Regards