There's always been a confusion between Plans and Tasks. To move a task to project, you need to copy the task as a plan and vice versa.

We have decided to remove "Plans" and replace them with tasks.

Changes

• Plans are no longer supported
• Your existing plans have been converted to project tasks
• You can now add tasks and notes to a project
• No longer need to manually move a project task to timeline. Adding a date/time would add it in the timeline.