Affricatize

Coleman(1995: 376) and Palmada (1995: 308–310) have pointed out that there is a cross-linguistic tendency for fronted velar stops to affricatize in the palatal region, and have both proposed a [palatal] → [continuant] implication to account for this dependency.

Source: wiktionary

The uvular stop forward shifted to become a velar stop (i.e., q>k) in many Mayan dialects, and the velar stop tended to affricatize (e.g., k>tʃ).

Source: wiktionary

The only information we can extract from Grzegorzewski (1916-1918) is, firstly, that [t] becomes palatalized before [i] and tends to affricatize into [ć], and, secondly, that the word halidi 'present, today's' [we note it in Grzegorzewski's transcription] was in his lifetime already being pronounced more like haligi (Grzegorzewski 1916–1918: 278).

Source: wiktionary