The import process for ES (8.x) to ES2 (9.0) is confusing by my reckoning. Here are some notes I made for myself. PLEASE be aware that these notes were made for a very early build of ES2 so your mileage may vary.
1) Admin UI - import 8.x archive
2) Workbench applications view - click refresh
3) create new application ('File > New > Application')
4) optionally, create folders for forms, processes, etcetera
5) right-click on application version folder and select 'Import'
6) expand 'LiveCycle runtime content' folder and select 'Process'
- lca should be visible in 'Process Import Wizard'
- drill into proces name and select process version
- select target folder and click 'Finish'
7) right-click on application version folder and select 'Import'
8) expand 'LiveCycle runtime content' folder and select 'Resource'
- lca resources on local machine should be visible in 'Resources Import Wizard'
- select resource
- select target folder and click 'Finish'
Steve