I'd enabled Visual Annotate in the workflow configuration (configurable_author_assignment.cfg) with the following setting:
##
## VisualAnnotate
##
# email templates
va_reviewer_email_header_template=/vannotate/templates/va_mailheader_reviewer.tpl
va_reviewer_email_body_template=/vannotate/templates/va_mailbody_reviewer.tpl
va_reviewer_email_text_body_template=/vannotate/templates/text/va_mailbody_reviewer_text.tpl
va_author_email_header_template=/vannotate/templates/va_mailheader_author.tpl
va_author_email_body_template=/vannotate/templates/va_mailbody_author.tpl
va_author_email_text_body_template=/vannotate/templates/text/va_mailbody_author_text.tpl
# Should the initiator be prompted to confirm or change these
# choices when initiating a job?
# If yes, the value of va_enabled will serve as the default.
va_enabled=yes
ask_va_enabled=no
# Setting this property to yes will enable a non-VA-enabled job
# to keep track of review cycles. (All VA-enabled jobs automatically
# keep track of review cycles, regardless of the value of the property.)
review_cycles=no
# VisualAnnotate variables
va_show_cycles=all
va_show_snapshots=all
va_show_reviewers=all
va_create_snapshots=unlimited
va_default_page=snapshot
va_show_live_option=true
va_which_snapshot=last
va_show_save_button=true
1.) Editor assign a task to an author
2.) Author finishing the task create a content
3.) Editor clicks file -> Review, and the Visual Annotate is disabled.

did I configured anything wrong? please advise. Thank you.
TeamSite 6.5 SP2
Windows Server 2003 Enterprise Edition SP1