In order to see if statutory assessment data has been imported from the CTF you will need to navigate to the the student's profile, click the Assessment tab, and click where it says 'Statutory Assess.' on the left hand side of the screen on the 'Other' table.
If there is no data present, but you believe there is data present on the CTF, please upload the file into Admin > Secure Upload and contact email@example.com. Let us know what expected data hasn't come across, and the name of the CTF file in secure uploads. If only one or two students were in the file, it will also be helpful to be provided with their names/student ID.
Please note: Internal assessment (summative) data does not come across in a CTF, only Statutory Assessments (EYFS, End of KS1 & End of KS2).