Backmerge: #1982 Cannot open some expected IDT.

[AliaksandrDziarkach]

backmerge to master

Refactor code to corresponde updated cases. Add UTs

Backmerge request

• [ ] PR name follows the pattern Backmerge: #1234 – issue name
• [ ] PR is linked with the issue
• [ ] base branch (master or release/xx) is correct
• [ ] code contains only backmerge changes