Thank you for your help, this has improved my workflow.
Unfortunately, I have another problem. In my workflow I input 6 separate channels in greyscale. I have given them a name and grouped them by the field number. I cannot seem to export a spreadsheet which contains the intensity measurements for each object for each channel. When selecting the measurements to export, on the export to spreadsheet screen, there isn't an option to select intensity measurements for my desired objects (filtered objects). Is there something I am missing that is simple?
I will upload some images soon.