merging .osc files with Map

Hello everyone,

I hope you're doing well. currently working on a project related to handling OSC (OpenStreetMap Change) files. I'm seeking advice on merging these change files with an existing map from GeoFabrik, specifically the Brazil map, using tools like Osmium.

I've attempted merging using 'osmium merge-changes' and 'osmium merge', but I observed that these methods combined the points from all OSC files into the same location, which wasn't the expected outcome.

I'm looking for guidance on how to accurately and precisely merge these OSC files with the main Brazil map from GeoFabrik. Additionally, I'm curious if Osmium provides a tool or method to verify if the files were merged correctly after the process.

I'd highly appreciate any suggestions or guidance on performing this merge effectively, ensuring that the changes from the OSC files are correctly integrated into the existing Brazil map from GeoFabrik.

Your assistance and expertise in this matter would be immensely valuable to me and my project. Thank you in advance for any help and guidance you can provide