Reported as OpsLog defaulting QSL_SENT_VIA and QSL_RCVD_VIA to "E" on import.
It does not: recordToQSO reads the field and normalises it, so an absent, empty,
blank or unrecognised value gives an empty one. An "E" seen after an import came
from the file — Log4OM writes QSL_SENT_VIA:1>E on every record whether a card
was ever sent, which TestQSLSentViaDoesNotBecomeManager already pins.
Nothing to change, so this pins the half nothing covered: the ABSENCE case. The
opposite is an easy reach — electronic confirmation is the common case — and
defaulting to it would quietly rewrite the operator's own record of how their
cards travelled, which is the same class of fault as issue #16.
Compiles and vets clean; not executed here — this machine's Application Control
policy began blocking freshly built test binaries partway through the session.