OSIS-5035 : test extending partim with no end year (limited by parent)
OSIS-5035 : test extending partim with no end year (limited by parent)

uclouvain/osis,uclouvain/OSIS-Louvain,uclouvain/osis,uclouvain/osis,uclouvain/osis,uclouvain/OSIS-Louvain,uclouvain/OSIS-Louvain