According to your introduction, the case happened in Suqian area. Article 28 of the Civil Procedure Law stipulates that "a lawsuit brought for infringement shall be under the jurisdiction of the people's court in the place where the infringement occurred or the defendant's domicile". And you seem to object to the jurisdiction of Xinyi court, saying that it should be under the jurisdiction of Suqian court. Therefore, Xinyi Court transferred the case to Suqian Court, and it was not improper for Suqian Court to accept the transfer.
Suqian court only issued a summons to you, but did not serve a copy of the plaintiff's complaint and evidence, which may be imprecise. But after the Xinyi court filed the case, it should have sent you a copy of the complaint and a copy of the evidence, otherwise you wouldn't know the reason for filing the case. Perhaps it is for this reason that Suqian court didn't send you a copy of the indictment and a copy of the evidence together with the summons. If you need Suqian court to provide these materials, you can apply to it.
The law does not stipulate that pre-litigation property preservation will be automatically lifted due to the transfer of jurisdiction. You can apply to the court for dissolution or provide guarantee according to the actual situation. However, whether it is dissolved or not shall be decided by the court according to law.