when components are marked deprecated, this does not mean, that they do not exist any longer.
Usually they still exist and might be removed in a later release.
Existing projects/implementations can be migrated to the new version.
But new projects/implementations should not be started using deprecated components.
In wM 9.5 (maybe earlier) the new Rules-Engine has been introduced, which should be used for new projects/implementations instead of FICO.
Rules development for the new RulesEngine is included in Designer instead of having its own client.
For further informations see the ReleaseNotes and Guides available from Empower or here:
Check with your License Owner how to obtain a license for the RulesEngine.