You can import and reimport to override imported data but if the logs already exist in TBC, there is no way of exporting these out as a csv to then edit and reimport. At least, not that I am aware of.
You could export out the points and reenter the strata data, this just seems a little redundant.
Commonly with bore holes, we are not given the data as a list with northing, easting, elevation and other strata data. This TML works great for supplement data, field verified test pits, or if you are given coordinates and the strata data in an excel type format.


The step that I am missing, because it wasn't really available, was having the data as a csv to begin with.