Hi,
this transition can´t be coded according the ARINC424 rules and therefore this transition is missing from the charts and also from the data.
The reason is the DME Arc from ARPIG → D312K … according the AIP (and you see this on our charts too), this segment is defined as DME Arc 10.5/ISI … The coding of AF legs (= DME Arcs) require the Arc defining navaid needs to be a collocated VHF (means a VOR, VORDME, a VORTAC or a TACAN), but ISI is only a DME (or a NDB) … therefore, you can´t code it.
The yellow marker is the definition of the DME Arc, the blue marker the DME and the NDB: