Caching node variant - inconsistent results

Hi,

We have a category on our community that contains 5 child TKBs. I've built a menu so that on the category page, it shows the 5 TKBs, clicking on the first one will take you to the first article in that TKB (via a redirect). Once in the TKB, the menu will display all of the articles for that specific TKB.

The problem I have, when using liaMarkupCache and "node" variation, the sub-menu doesn't populate on that first page of the TKB. It's like it's caching the result from the category page, despite different coreNode.id's for each. I assume the redirect is messing with things somehow, but not sure how? The TKB page shows the same coreNode.id as its children, so I assume the "node" variation would still work.

Any help appreciated.