New iMac user with questions about migrated data

So I migrated to a great new 5k 27" iMac a couple of months ago and have carefully been reconstructing what was my desktop life using a Windows PC. I have been checking to make sure I had all my data, and have been working at migrating my applications, or finding new substitutes for what I need to do.

One thing I have not noticed until now is that when I view any files properties, it shows all my files as having been "created" on the date that I migrated to this computer. In other words, when I transferred files from the Windows hard drive to the Mac hard drive. They do show a "modified" date that is correct. I would like to retain the original created date for photos, documents, and other files for many reasons. I still have my old hard drives. Is there anything I can do in such a Windows to iMac file migration to retain the original date and time stamp for files, particularly image files, documents, and any and all others?

Thanks!