Allow multiple GMD values in CSV import
Allow multiple GMD values in CSV import

Using pipe delimiter. Fixes #6692

CENDARI/atom,Surfrdan/atom,kyfr59/atom-cg35,kyfr59/atom-cg35,artefactual/binder,artefactual/binder,CENDARI/atom,kyfr59/atom-cg35,artefactual/atom,artefactual/binder,artefactual/binder,Surfrdan/atom,Surfrdan/atom,CENDARI/atom,artefactual/atom,artefactual/atom