Can progress be transferred across platforms?

No, and why on Earth would you want to give em money twice?

Refer to the face your avatar is making.

Did that last gen moving from 360 to ps3 after a couple years and it took me while last year to complete my ps3 manifest without weekend events. It's such an obvious requirement now in this day and age and could be achieved with such minimal effort it boggles the mind why they don't do right by the player base. Strike team missions are already multiplatform.

If they do this for financial reasons then I don't really understand how this helps them as the main driver to repurchase the game on other platforms are friends on other systems and if all of your friends on XBO & PC have APEX 15-20k manifests and are playing platinum now and you've got diddly and are many months away from being able to join them without being a huge burden or baring a horrendous grind that you've already completed once, it's just unacceptable and unreasonable, especially after patch 1.09.

You may be remembering what they did for DAI MP? They did one-time transfers on a case by case basis  in DAMP for transferring manifests to Xbox One and PS4.