Please HELP - Merged actor(instanced static meshes component) disappears in packaged android project

Merged instanced static meshes disappears in packaged android project although they are visible in vulkan pie. Only in packaged project on device they disappear but collision stays.

I used many small object and merge them. It worked fine in 4.24.3. But 4.25 makes troubles. Tried material parameters , such as use with instances and other but seams nothing helps.

Any help would be appreciated.