I'm using QGIS 3.4.6, working with a big biological dataset in several shapefiles.
I want to convert the working shapefiles to CSV files, add a column with new data, then convert the CSV files back to working shapefiles.
I got the first step done (by using semicolons to separate the columns), and before I start adding data, I want to figure out how to convert them back. So, I didn't change anything from the CSV file QGIS created. I select the CSV file in the Add Delimited Text layer popup, deselect 'first record has field names' and then get stuck on the Geometry Definition options.
The CRS gets autoselected correctly, but I can't select the 'lat' and 'long' columns (thats how they're named in the CSV file), it only gives me a 'field_1' option, then tells me X and Y can't be the same.