IBoost disappearing from plan as it approaches the time to switch

[timparker71]

I have iBoost set to heat hot water when electricity is cheaper than gas.
Checking on the plan hours in advance, all looks good and today it was scheduled to switch at 12:30, which made sense as that was the cheapest import time.
By midday that scheduled iBoost had disappeared from the plan, but is scheduled for tomorrow.
This has happened a few times to me now, hence I'm raising it as bug.
I'm wondering if once the Nordpool rates are added to the plan at 10am it confuses things?

Screen shot of plan below and files attached

apps.yaml.txt

predbat (4).log

4kWh solar panels AC coupled.
Growatt SPA3000 inverter controlled via Solar Assistant
Mini PC based Home Assistant running version 2026.3.2
Predbat version: 8.35.1

[timparker71]

Today (a day later) with everything set exactly the same, iBoost has remained scheduled and performed as expected. The big difference is tomorrow's rates are above the threshold of 'electricty cheaper than gas' and iBoost hasn't been skipped and pushed on by a day

Todays plan below:

[timparker71]

Today again, iBoost was set to run at 1330 as elec import was cheaper than gas. Again it's failed to run. Again this has happened when tomorrow's provisional import rates are lower than gas. IBoost seems to have been stripped from the plan again today.
Im happy to attach further files if it would help.
Thanks
Thanks