diff --git a/src/main/java/com/epam/ta/reportportal/core/project/settings/impl/DeleteProjectSettingsHandlerImpl.java b/src/main/java/com/epam/ta/reportportal/core/project/settings/impl/DeleteProjectSettingsHandlerImpl.java
index 1037863dac..7a91e004be 100644
--- a/src/main/java/com/epam/ta/reportportal/core/project/settings/impl/DeleteProjectSettingsHandlerImpl.java
+++ b/src/main/java/com/epam/ta/reportportal/core/project/settings/impl/DeleteProjectSettingsHandlerImpl.java
@@ -170,7 +170,7 @@ public OperationCompletionRS deletePatternTemplate(String projectName, ReportPor
 				.orElseThrow(() -> new ReportPortalException(ErrorType.PATTERN_TEMPLATE_NOT_FOUND_IN_PROJECT, id, project.getName()));
 		PatternTemplateActivityResource before = PatternTemplateConverter.TO_ACTIVITY_RESOURCE.apply(patternTemplate);
 
-		patternTemplateRepository.deleteById(patternTemplate.getId());
+    project.getPatternTemplates().removeIf(pt -> pt.getId().equals(id));
 
 		messageBus.publishActivity(new PatternDeletedEvent(user.getUserId(), user.getUsername(), before));
 		return new OperationCompletionRS(Suppliers.formattedSupplier("Pattern template with id = '{}' has been successfully removed.", id)
diff --git a/src/main/java/com/epam/ta/reportportal/core/project/settings/notification/DeleteProjectNotificationHandlerImpl.java b/src/main/java/com/epam/ta/reportportal/core/project/settings/notification/DeleteProjectNotificationHandlerImpl.java
index d268937139..246fd7b8d2 100644
--- a/src/main/java/com/epam/ta/reportportal/core/project/settings/notification/DeleteProjectNotificationHandlerImpl.java
+++ b/src/main/java/com/epam/ta/reportportal/core/project/settings/notification/DeleteProjectNotificationHandlerImpl.java
@@ -64,7 +64,6 @@ public OperationCompletionRS deleteNotification(Project project, Long notificati
         ErrorType.BAD_REQUEST_ERROR, Suppliers.formattedSupplier(
                 "Notification '{}' not found. Did you use correct Notification ID?", notificationId)
             .get());
-    senderCaseRepository.deleteSenderCaseById(notificationId);
 
     ProjectResource projectResource = projectConverter.TO_PROJECT_RESOURCE.apply(project);
     ProjectNotificationConfigDTO projectNotificationConfigDTO =
@@ -74,6 +73,8 @@ public OperationCompletionRS deleteNotification(Project project, Long notificati
             scs.stream().filter(sc -> !Objects.equals(sc.getId(), notificationId))
                 .collect(Collectors.toList())));
 
+    project.getSenderCases().removeIf(sc -> sc.getId().equals(notificationId));
+
     messageBus.publishActivity(new NotificationsConfigUpdatedEvent(projectResource,
         projectResource.getConfiguration().getProjectConfig(), user.getUserId(), user.getUsername()
     ));