[keycloak-user] Keycloak won't allow me to select my theme from drop-down list

Hi, I am trying to upgrade Keycloak step by step from very old 1.4.0 version to the latest one. However between version 1.8 and 1.9.8 default themes folder has been changed, and since that I can't see my theme on drop-down list in Realms Settings -> Themes -> Email / Login. What I can see in log is: 10:39:14,181 ERROR [org.keycloak.theme.ExtendingThemeManager] (default task-14) Failed to find LOGIN theme my_theme, using built-in themes 10:39:14,745 ERROR [org.keycloak.theme.ExtendingThemeManager] (default task-16) Failed to find LOGIN theme my_theme, using built-in themes which means it can see it but won't allow me to use it for some reason. I also tried to clear cache, but with no luck. My theme.properties: parent=base import=common/keycloak styles=css/login.css meta=viewport==width=device-width,initial-scale=1 kcFormGroupClass=ck-form-group-class kcFormOptionsWrapperClass=ck-form-options-wrapper-class I went through Keycloak directory structure but found nothing related to themes. brgds,