Dear Michael, this should actually work. If you used a "Named File Selector" to select your functional images at the top of your batch, you can also use the selection index vectors from this selector (as dependency) to perform the split. Volkmar https://www.jiscmail.ac.uk/cgi-bin/webadmin?A2=ind0905&L=SPM&P=196416 <https://www.jiscmail.ac.uk/cgi-bin/webadmin?A2=ind0905&L=SPM&P=196416>