This isn't the first time forum archives have vanished. We got through it before, we'll get through it now.
The archive was always marked as temporary and could go away at any time. Anyone who wanted to pull stuff off of it has had 9 months to do so and if they haven't, then it's their own fault. It's (somewhat) sad that those posts were lost, but if they were important, the info will be reposted by somewhere by someone.