As a network administrator, I am a paranoid individual when it comes to such things as deleting data. Therefore, I make backups of everything prior to doing something drastic like renaming or deleting my route.
Using CMP, I export my route, and session as a CDP. This serves as my backup prior to poofing anything off to bit heaven. I've tested this, and it works fine. I backed up all of my assets to DVDs, deleted them, reloaded them, and then imported my deleted route from the CDP.
The alternative is to make a backup of the route using CMP, but the problem with that is the size of the backup. The backup will contain every asset used in the route; like every tree, building bird sound, etc. This can become a problem as the route grows because there have been reports of backup issues when the backup reaches 2.0Gig in size.
Having said that, I use the export to CMP.
John