Sorry for the late reply.
The steps to override AADL_Project are described in OSATE's help text. Go to Help > Help Contents and
then navigate to OSATE Core Documentation > Advanced OSATE Features > Managing Contributed Resources
and follow the description.
Do not use the checkbox to ignore AADL_Project.
You may need to fully rebuild your projects by closing and re-opening them, or restart OSATE for the overriding to take effect.
Note that the overriding applies to every project in your workspace.