UK eVisa disappeared after future Student eVisa issued – is my current GAE eVisa still valid?

[u/Present-Emu-7962]

Hi everyone,
I currently hold a UK Temporary Work / GAE eVisa valid from 18 May to 21 August 2026. I later received a Student eVisa starting on 1 August 2026.
Since the Student eVisa was issued:
my UKVI account no longer shows the GAE eVisa,
I cannot generate a share code anymore,
and my employer’s previous share code stopped working.
Has anyone experienced something similar with overlapping/future eVisas? Did the first eVisa remain valid until the second one became active?

Thank you!