There is no provison of the ferderal DV process that requires deletion of a reported collection pending debt validation.
Their deletion is thus voluntary. They have some business reason for the deletion, but only they can provide their reason, and it is not mandated.
As a side-note, the DV process under the Texas Financial Code does provide for a required deletion if they cannot provide requested validation within 30 days of a DV request made under that state code, but there is no such provision under the federal FDCPA.
It will remain deleted unless/until they send a new reporting to the CRAs.
If your DV request was timely, then case law interpretation of the cease collection bar imposed by a timely DV may be considered as a bar against reinsertion until they have first validated.
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