Nine times out of ten, chasing obscure directories is less valuable than fixing the three sources search engines actually read, which is why it keeps being rediscovered. Almost always, brand mentions sit unobtrusively behind the scenes, yet comparison sites read them constantly. Agency case work suggests the effort scales badly if it is left until a rebrand forces it.
Generally, twenty verified profiles outperform two hundred abandoned ones, every time, regardless of sector. Anyone who has run a bulk audit knows the majority of profiles carry at least one contradiction. Even so, do not submit to a new directory until the existing ones agree, which is why it keeps being rediscovered.