Analyses may be ‘prepared’ (yet to be analysed), ‘analysed’ (contains occurrences), or ‘barren‘ – indicating that they have been analysed but found to contain no taxa.
When we reviewed and tightened up all aspects of the way the biostrat data were stored in v2.0, it seemed sensible to enforce that analyses marked as barren did not contain occurrences of microfossils. Therefore the only option when clicking the barren flag was to clear all the occurrences. It’s been pointed out to us since that analyses can contain accessory minerals or perhaps caved taxa, while still technically being barren of microfossils.
The most recent test update will allow you to have your cake and eat it – you still get the option to clear the occurrence list, but you can have some analysed data while the analysis is marked as barren. This doesn’t require a change to the underlying data model, and any data files exported will reflect what you have on screen. The only caveat is that if somebody without the update imports the file, their analysis will not be barren.