If work appears to be missing, check its type, dates, filters, and access before creating a duplicate.
Look in the Tasks panel rather than the grid. Show the panel if hidden, confirm the task has a due date, and set its own filter to All. Undated tasks remain available in Activities.
Check Add Activities or Edit Activities and the case status. Confirm the chosen calendar allows the activity type and that required assignee and due-date fields are complete. Task service selections may also encounter budget restrictions.
An inactive calendar or one that disallows the activity type may be unavailable. Assignees must be active and eligible in the workspace. Ask an administrator to review settings when needed.
Check the workspace timezone, start/end dates, and saved reminder. External calendar copies can display in a different timezone and do not synchronize later edits.
Use Help & Feedback with the case number, activity title, date, selected filters, and exact error. Include a screenshot if useful.