#546 - handle templates without any template group

src/main/java/de/deadlocker8/budgetmaster/database/model/v7/BackupTemplate_v7.java

@@ -174,6 +174,8 @@ public class BackupTemplate_v7 implements Upgradeable<BackupTemplate_v8>
 	@Override
 	public BackupTemplate_v8 upgrade(List<BackupInfo> backupInfoItems)
 	{
+		// need to set template group id to default template group here, but access to this informationen is not available at this point
+		// Instead ImportService will handle null values for template group id and fill in the correct default template group
 		return new BackupTemplate_v8(templateName, amount, isExpenditure, accountID, categoryID, name, description, iconReferenceID, tags, transferAccountID, null);
 	}
 }

src/main/java/de/deadlocker8/budgetmaster/services/ImportService.java

@@ -494,7 +494,7 @@ public class ImportService
 				updateTagsForItem(template);
 				template.setID(null);
 
-				if(!importTemplateGroups)
+				if(!importTemplateGroups || template.getTemplateGroup() == null)
 				{
 					template.setTemplateGroup(templateGroupRepository.findFirstByType(TemplateGroupType.DEFAULT));
 				}