UpdraftPlus 1.9.45 has just been released.
This fixes two bugs: one in the Premium version only, which affected importing some backups created by the third-party BackWPUp plugin; and a second which could cause scheduled backups to be skipped if you were using WP_ALTERNATE_CRON to fix your WordPress scheduler (you’d know if this was the case). This second bug appears to be hard to trigger, as it has been present since 1.9.19, and only come to light in the last few days.
In short: two small fixes, and no reason not to update.
David Anderson (founder, lead developer, UpdraftPlus)