Also i found another strange moment. In template i did collisions, but after press button "Generate level" different "level 0 - floor" collisions dissepear. Do you have ideas about this?
Viewing post in Edgar PRO - Unity Procedural Level Generator comments
That’s intended behavior. In the usual 2D setting, after a level is generated, all room templates are merged into a single tilemap layer (or multiple shared layers). When they’re merged, all collider layers from individual room templates are also merged into a single shared collider layer. In order to not have duplicate colliders and to ensure that it’s possible to go from one room to another, colliders from individual room templates are disabled and only the shared on is kept. This behavior can be toggled by disabling/enabling the “Disable Room Template Colliders” field in the Dungeon Generator inspector.
Also, here you can find some useful information about room template customization. The most important piece of information regarding that is that you cannot just modify a room template, e.g. by adding a collider to the “Level 0 - Floor” layer, and expect that these changes will transfer to the shared tilemaps in generated levels (“Generated Level” -> “Tilemaps”). If you want to do some modifications, you have to also change the Isometric1TilemapLayersHandler script.