Your Question

Hello! I have a small GTCEU server that I play on with a few friends - the only mods installed are GTCEU itself, JEI and OneProbe (and, for the record, you guys are doing a great job making GregTech playable without needing any other quality of life or logistics mods). I started the server on version 2.3.4, but there have been a good few versions since then and I want to update. In version 2.5.0, though, it looks like some IDs changed surrounding tools, like drills previously having been meta_tools but are now drill_lv, drill_mv, etc. Are there any provisions for updating the tools as opposed to just having all of my old tools be lost? Should I just spawn new ones in based on what I had before?

just backup your world and update gregtech

Launching the server on 2.7.4, I get the "type /fml confirm to confirm missing registry entries" prompt which mentions meta_tools, and if I confirm and log onto the server all of my tools are gone.

Yes, that is intentional, id suggest spawning in new tools to replace them. There was no way iirc to make them backwards compatible with the jank as old system

Alright, good to know. Makes sense that there wouldn't be a way to easily convert, just making sure.