The Xiaomi Home Assistant has encountered an issue where the entity identifiers for light groups have changed after updating to version 0.4.2. Previously, the identifier was in the format `light.mijia_cn_group_1867881341602107393_group3_s_2_2`, but it has now changed to `light.mijia_cn_group_1867881341602107393_group3_s_2_light`. This change in identifier is causing problems and it is expected that the identifiers should remain constant. The issue is reproducible, but the exact steps to reproduce it are not provided. The Home Assistant logs and other system information are not available. It is recommended to investigate this issue further and provide a solution to prevent such changes in the future. The Xiaomi Home Assistant integration version and other relevant details are not provided, which could be helpful in resolving this issue.