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Tomasz Ludwiczak
Many thanks for such a detailed answer. It seems to me right now that I have mistaken ad.1. End user wishes to transfer their resources to an LIR (either their current sponsoring LIR or another LIR).) with "Termination of Contractual Relationship Procedure" described https://www.ripe.net/publications/docs/ripe-688, which is not a transfer but Sponsor LIR change.