[NEST Users] warning: 'GetConnections' are now invalid

Hi everybody, I switched from Nest 2.16 to 2.20 and now I get this warning message: ConnectionManager [Warning]: New connections created, connection descriptors previously obtained using 'GetConnections' are now invalid This happens at several parts in my code while building synapses with 'sim.Projection(...)'. I use a 'FromListConnector' and 'STDPMechanism' as synapse_type. I neversaw this warning in the previous Nest version, is it something to be concerned about? I am not quite sure what it is trying to tell me. Thanks in advance, Lea ......................................................... M. Sc. Lea Steffen Wissenschaftlicher Mitarbeiter | Research Scientist Intelligent Systems and Production Engineering (ISPE) Interactive Diagnosis and Service Systems (IDS) FZI Forschungszentrum Informatik Haid-und-Neu-Str. 10–14 76131 Karlsruhe, Germany Tel.: +49 721 9654-218 steffen(a)fzi.de www.fzi.de/mitarbeiter/steffen ......................................................... FZI Forschungszentrum Informatik am Karlsruher Institut für Technologie Stiftung des bürgerlichen Rechts Stiftung Az: 14-0563.1 Regierungspräsidium Karlsruhe Vorstand: Prof. Dr. Andreas Oberweis, Jan Wiesenberger, Prof. Dr.-Ing. J. Marius Zöllner Vorsitzender des Kuratoriums: Ministerialdirigent Günther Leßnerkraus .........................................................