I am not sure about Deluxe, but Pro Platinum have a converter RedSDK to Ligthworks materials if you open a drawing with RW in v 2018 and you dont have RW plugin.
But you should be aware of that it maybe not work even if yo have it as they have changed a couple of times how the material files is written to make the material filesize smaller.
Select to open a v 2015 file in v 2018, in the selection window, click on setup, see attached
TC v 2015 dont know anything about a v 2018 file, so if you open a 2015 file in v 2018 and change/ want to save something, you should remember to save as a v 2015 if you ever want to open it in v 2015 again.
V18, V19, V20, V21, 2015/ 16/ 17/ 18 Pro. Platinum
Deluxe V20, V21, 2015/ 16/ 17
Windows 10 Home Premium 64 bit, 32 GB
NVIDIA Geforce GTX 780m, 1 GB