Hi Georgiy,
my pleasure!
Re. Kamyanka and Topolskoe: by now it's clear that the 92nd Mech drove into the rear of the 144th MRD, and caused it such losses that the Russians had to stop their offensive south of Izium.
I do not have clear evidence, but considering related reports are making circles for two days, meanwhile, I do assume that Kamyanka and Topolskoe are back under Ukrainian control.