Existing storages in the new version have different values for p_min_pu_fixed. They should be (or default to) -1 and not 0. I queried like this:
SELECT count(*) FROM grid.ego_pf_hv_storage WHERE scn_name = 'Status Quo' AND version = 'v0.3.0' AND p_min_pu_fixed = -1 AND source = 11;
and found 42 storages with p_min_pu_fixed = 0 and 4 storages with p_min_pu_fixed = -1 (for SQ and NEP). In 'eGo 100', there are some storages added which results in 30 items with p_min_pu_fixed = -1.