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How to write the declaration of changing custody and agreeing to children's immigration?

The content is as follows:

1. I, the (original/new) guardian, agree that (the name of the child) will follow (the name of the immigrant applicant) in (the name of the immigrant country) and confirm that this immigration application has been fully understood and agreed by me.

2. My (original/new) guardian agrees that (the name of the child) will follow (the name of the immigrant applicant) in (the name of the immigrant country) and confirms that the immigration application has been fully understood and agreed by me. I understand that submitting an immigration application does not affect my custody and/or visiting rights to (child's name).

3. My (original/new) guardian agrees that (the name of the child) will follow (the name of the immigrant applicant) in (the name of the immigrant country) and confirms that this immigration application has been fully understood and agreed by me. I understand that the submission of this statement will not affect my custody and/or visitation rights to (child's name).