Hi there @alfroc,
as you noticed this option was removed with 4.1.1. and is planned to be back in future version, don’t worry. Until then you can still use KNIME relative paths by using the KNIME protocol with the Custom URL option. Workflows created with KNIME 4.1.0 that use this option will still execute.
Same applies for nodes that have same configuration dialog.
Tnx for engaging!
Br,
Ivan