Another nice feature with the upcoming XLights 4 release is that you can import and tie your LOR sequence to the sequence in XLights. That means if you update your LOR file, all you need to do is open the XLights file and re-save it and it will automatically update with the most current LOR changes you made.
XLights scheduler works well, but I believe Sean said he doesn't plan to add features to it any longer. With XLights 4, it now saves as an .fseq file, which can be used directly by the FPP software to run shows. (if that holds any interest for you)