Migration script with nonCentOS RPMs?

I want to migrate a CentOS 8.4 system to Rocky Linux. It contains some (39) installed RPMs which were built from CentOS source RPMs but which are not available as CentOS binary RPMs. I’m guessing most of these will not be available in that form in Rocky either. My question is, what will the migration script do when it sees these? Here are some examples:

perl-forks-0.36-14.el8.x86_64.rpm
itcl-4.1.1-2.el8.x86_64.rpm
itcl-devel-4.1.1-2.el8.x86_64.rpm
itk-4.1.0-2.el8.x86_64.rpm
itk-devel-4.1.0-2.el8.x86_64.rpm

Thanks.