Close, but you want to build module AFTER everything else.
Suggested Steps for updating to CEP 2.6:
1: Back up module
2: Update Module to 2.6 haks and TLK (Talk Table)
3: remove old script hak (and blueprint palette haks if palette blueprint erfs also used)
4: Import 2.6 script erf (plus erfs for creatures, placeables, item and other custom palette blueprints if desired)
5. rebuild to make sure everything works (and refresh palettes if needed)
6. Save module as new version (modname26)
Tips:
To speed up the process, you can cancel error checking during hak updating, then just "build module" when ready to save.
Depending on a module's scripted system complexity, sometimes 2+ module builds may be required to fully compile all scripts correctly.