How to keep a backup infinetly
1) Click on CONFIGURE (on the left).
2) Select the Protected Assets tab at the top
3) Click the check box next to the Protected Asset or VM you want to manage.
4) Click the Edit button above.
5) At the bottom, click on the words Managed Retention.
6) Set the value for "Keep backups for" to a very high value. Click save. I chose a lot of nines.
When I saved it, it set the value to: Hold 1410065407 Days You will see this in the Protected Asset page for that Asset.