The npm command import:data does not trigger inventory import. To import inventories, one needs to run import:inventory. README may mention this perhaps with a warning that inventory import takes a long time just as in here https://github.com/commercetools/commercetools-sunrise-data/blob/master/lib/data.js#L86-L88
(Thanks go to @stmeissner for the reference to data.js.)
The npm command
import:datadoes not trigger inventory import. To import inventories, one needs to runimport:inventory. README may mention this perhaps with a warning that inventory import takes a long time just as in here https://github.com/commercetools/commercetools-sunrise-data/blob/master/lib/data.js#L86-L88(Thanks go to @stmeissner for the reference to data.js.)