Completing a Kirac Daily Mission will reroll all other Mission map tiers as well

Not sure if bug or intended, but I noticed the following with regard to Kirac daily/atlas missions:

- Notice the Red-tier Kirac atlas missions have specific mapgs (e.g. Twisted Distant Memory)
- Select and complete a Yellow-tier Kirac atlas mission
- Notice the Red-tier Kirac atlas missions have been rerolled and no longer contains the previous set of maps (e.g. Twisted Distance Memory now gone)

Feels unintuitive that the other tiers, separate from the tier of mission you're running, reroll after completion. The reason for this is due to the fact that the player has a finite number of atlas missions and they are independent of each set of tiers. So, why would completing a Yellow-tier mission have any impact on the Red-tier missions?

Thank you for the info/clarification.

(Yes, I lost a Twisted Distance Memory this way; hence the post. Heh.)