Source 2 has an implemented support for importing Source 1 assets properly into Source 2. Luckily, I found a way to solve this issue.
Initially, when first porting the maps, I've noticed that the textures didn't scale properly and they had to be manually scaled and aligned. More than a month ago I've started porting Bloodlines maps and assets into Source 2 on and off, which started out as mostly a VR experiment in Half-Life: Alyx.
