Missing VirtualDisk on bootup, status Foreign on all

I have a Dell PowerEdge 2950 with DAS storage attached (MD1000) I rebooted the server to apply window updates (win2008), on restart BIOS detected a VirtualDisk was missing and wanted me to continue or raid Config and import conf .... I continued on :(

After startup, there was storage missing... a volume (RAID5). I opened Dell OpenManage and checked the status on the storage. Everything was fine. No failures, nothing degraded. There were no warnings, even no external hdd warning lights on the any drives. The missing virtualdisk is fine and "ready". Except that All physical disks (6 out of 7 total) for the missing raid where marked as "foreign" EXCEPT for ONE disk the dedicated hot spare.

The failed VirtualDisk resides on the MD1000, as well as another VirtualDisk which is currently fine.

Can I still use the IMPORT foregn config to save the virtualdisk or am I too late?

Will I have to use CLEAR foreign config and rebuild the array? And if I do use CLEAR on all 6 foreign hdds, will this effect the working VirtualDisk that resides on the same controller? (Perc5)

And lastly, how or why would I lose the virtualdisk this way? The logs  only mention a failed battery. I do not want to rebuild and have this happen again. Is it the RAID card? Battery? All hdds are fine... below are the only event logs I could find...

1. The current driver version 2.20.00.64 (percsas) is older than the required driver version 2.24.00.64 (percsas) for a controller of model 0x1F0C: Controller 0 (PERC 6/i Integrated)
2. The current driver version 2.20.00.64 (percsas) is older than the required driver version 2.24.00.64 (percsas) for a controller of model 0x1F01: Controller 1 (PERC 5/E Adapter)
3. The controller battery needs to be replaced.: Battery 0 Controller 1
4. Device failed: Battery 0 Controller 1
5. Controller event log: VDs missing at boot: 00: Controller 1 (PERC 5/E Adapter)
6. Controller event log: Battery needs replacement - SOH Bad: Controller 1 (PERC 5/E Adapter)
7. Controller event log: Current capacity of the battery is below threshold: Controller 1 (PERC 5/E Adapter)
8. Controller event log: BBU disabled; changing WB virtual disks to WT: Controller 1 (PERC 5/E Adapter)