Yes, If you go to https://www.conqusync.com/tools/export/ you can export your tasks to an excel document that you can search, sort, graph, chart, backup, and or manipulate in any way you choose.

Does the csv include everything?

Yes it does. Here are some of the fields:

• incomplete
• complete
• archived 
• trashed
• scheduled for
• due date
• creation date
• completion date
• project
• contexts
• tags
• delegation date
• delegated to