Search Volume data storageAfter keyword research or keyword import some keywords might miss search Volume data.
Why?We store Search Volume data in a common database without linking it to a particular user. For example, a user A signed up on 2013/03/03 and checked Search Volume on the same day. Another user B signed up on 2013/02/14 and added the same keywords to the project. The user B will automatically get Search Volume data pulled from the common database. But this data is out-of-date.
We do recommend to check keyword Search Volume monthly to keep your data up-to-date.