After Migrating my account it says I no longer own Minecraft Please help@

I migrated my minecraft account somewhat recently and when the recent minecraft launcher update released at first it says I could not log into my account or any microsoft account and it refused to let me login into a microsoft account for 3-4 days. Today it finally let me login into my recently migrated Minecraft Microsoft account but now the launcher says that I no longer own minecraft and I can only play the demo or buy minecraft again. I don't know if I will lose my progress if i buy minecraft again and I don't want to risk it not working even after buying it again. Please is there someway for mojang to either give me my pre migration account back or fix the problem and have the launcher work! Please!