MPM fmap in derivatives are intended for data in the raw dataset

[Remi-Gau]

Detected on a routine check of the datasets with derivatives with bids-matlab.

I may have missed that in the qMRI spec but I am not sure that IntendedFor can cross dataset boundaries.

See here where a fmap in deritvatives is intended for some data in raw: https://github.com/bids-standard/bids-examples/blob/df982afc719751d4b7f38d426aa38fc6832e06fa/qmri_mpm/derivatives/hmri/sub-01/fmap/sub-01_acq-MTw_RB1map.json#L2

[Remi-Gau]

See also: https://github.com/bids-standard/bids-specification/issues/814

[sappelhoff]

I think with BIDS-URIs this is possible, so the dataset(s) in question should be updated to make use of BIDS-URIs, WDYT?