Assignee auto complete not showing all the available users

[Pedro Felgueiras]

 I recently change my user directory from AD to Crowd. 

When I start to type the username on the assignee field, some users aren't available. To validate that isn't a permission problem, I enter with the user I can "Assign to me". 

Is there any cache for the user pick on the assignee field ?  

Thanks for the help

[Brant Schroeder · Accepted solution]

Have you reindexed since the directory change?

[Pedro Felgueiras]

I have re indexing by adding a new directory and deleting it after