[BSAAGR-123] The number of available mappings is not refreshed when a new mapping is imported
This is a new MR based on https://gitlab.pcss.pl/dl-team/aggregation/dace/-/merge_requests/465
improving the changes needed for [BSAAGR-94].
This is a new MR based on https://gitlab.pcss.pl/dl-team/aggregation/dace/-/merge_requests/465
improving the changes needed for [BSAAGR-94].