Geometry treated as text after Tree editing

Hi

I am using the Split Tree and Clean Tree functions to extract specific lines from a larger sample.

Whilst it seems to work - based on the Panel display - Grasshopper doesn't recognise the 'split and cleaned' tree as geometric data: If I try for instance to feed the 'split and cleaned' tree into a Geo component the folloing error message appears: "Data conversion failed from Text to Geometry" (see attached screen capture).

Has anyone an explanation/a fix for this?