Not sure if this was already implemented, but I have found that while the clickup sidebar automatically loads only two levels by default, the rest of the nested tasks of a block load after you click on it

Please improve the feature so that Sunsama can understand at least 3 levels (out of 7 in total) of ClickUp's nested subtasks.

At the moment it only recognises up top-to 2 levels. The third level of nested subtasks from ClickUp can be transferred into Sunsama under "subtasks" in each task.

Is there any workarounds at the moment?