Transferring high schools. One combined transcript or two separate?

My family is moving out-of-state. When I apply to college will they get both transcripts or will my new HS combine into one like I attended 4 years?

Even though your new high school will record your old grades on their transcript, it is almost certain that the colleges/universities will require that you also have a transcript sent separately from your first high school.

My current HS is very hard and my unweighted grades will not reflect the rigor of the school. Concerned about this.

Also wondering how they will assess gpa.