First of all, you need to get through the work of your current work unit, and they are willing to let you go.
Second, if you want to transfer to other provinces, you need a specific civil service unit willing to accept it. At the same time, this unit also has staffing and job vacancies.
Third, handle the procedures for transferring civil servants. The transfer-out unit and the competent personnel department need to agree, that is, the opinions of the current unit and the Personnel Bureau need to be stamped (in some places, the opinions of the editorial office need to be stamped, but many personnel bureaus and the editorial office are two brands and a set of people). Transferred units should be stamped with the opinions agreed to receive, and at the same time stamped with the opinions of the personnel bureau.
Fourth, after the business is handed over, it can be officially transferred. Therefore, it is not an easy task to handle this transfer, which needs to involve so many departments. Do something.
Your situation: 1 and the business transfer letter of D province has been sent, which proves that D province is willing to accept it. Your transfer needs municipal approval. 2. It needs the seal of the B-level department for approval, that is, the Municipal Personnel Bureau (management cadre transfer), the editorial office (adjustment of management establishment) and the Public Security Bureau (public security system transfer generally needs the approval of the public security department at the next higher level). As for the organization department, it is generally necessary to have leadership positions. 3. Since D province agrees to accept it, the original unit will generally agree to transfer it out (because your transfer will free up the establishment and positions), and it is no problem to pass it according to the normal process. But now the process of doing things is very slow, and the phenomenon of rent-seeking at the grassroots level is more common. I suggest you do something to promote the efficiency of things. I hope my answer can help you. Good luck!