I have data in a .csv sheet that I imported as a vector layer into QGIS. I then joined the imported table with an existing .shp file. The fields that I joined into the .shp file are not editable (they remain greyed) and I notice the field value is 0. Is the uneditable field related to the field value?
In addition, when I updated my .csv sheet, the linked layer within QGIS gets updated automatically but the attributes in the .shp file don't get updated. Why is this so?