> For the complete documentation index, see [llms.txt](https://hotgearproject.gitbook.io/hotgear-project/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hotgearproject.gitbook.io/hotgear-project/obsolete-document/3.parameter-explorer/3.8.known-issue-faq.md).

# 3.7.Known Issue / FAQ

### Issue

* Grouping Parameter in Data Table and renew parameter may case grouping still on top, but grouping row is already reset. Please clear the grouping column before other operations.

### FAQ

1. Why can't edit the Revit Link Elements Data?

> Because linked documents are not modifiable, please unload and open the document as a separate main document, make the changes there, save it, and link it back again to the original host.