I'm pretty disappointed in my cross save experience so far due to not really being eligible to participate thanks to a previous PC-to-Console migration on Switch. The decision makes some sense (copying over an already duplicated inventory would have been a MASSIVE increase in resources for me, personally), but this whole time I had been under the impression that this issue was something that was known and being considered as cross-save was being developed. I had a period where I only played on Switch because I no longer had a PC, but then switched back to playing on PC once that option was available again. It feels like an edge case, but it's still a bummer that I can't carry over the differences between my inventories to finally everything I earned all in one place.
What also was surprising was the lack of communication about this all the way up until implementing cross-save. According to the wayback machine, right up until around the December 18 rollout, there was no mention of the eligibility for accounts that already did a PC-to-Console account migration.
A snapshot was taken of the FAQ on December 8, 2023, having no mention of PC-to-Switch account merging: https://web.archive.org/web/20231208232545/https://www.warframe.com/crossprogression
The next available snapshot on December 19, 2023, shows that an update was made to the page:
https://web.archive.org/web/20231208232545/https://www.warframe.com/crossprogression
These snapshots also don't represent exactly when an update to the cross progression FAQ was made, but they do show that they added a good amount of information at some point close to rollout.
Overall, I'm glad that cross progression is finally here along with crossplay and trading! I wanted to just give my feedback on what my personal experience has been like so far. Hopefully a solution for these kinds of cases can happen in the future, otherwise I think I'll have to see about just trading myself from my Switch account 😂