Stop Launchbox from changing my custom launching .exe to the default one?

[Tamha]

Not sure if this problem is unique to the Sims 2 or not, but I use a special injection launcher for it (SimsRPC). Since it fixes one of the largest bugs built into the game, as well as having some other QoL features, I run the game exclusively from this alternate launcher. However, every time I close then reload Launchbox, whether I played the game or not, the Launching .exe is reset to the default rather than remaining on the one I've assigned (repeatedly at this point) to be treated as default. I ensured I added custom metadata information to the RPC additional app option, then assigned it as default, which the information is all retained as default but the .exe is not. I've tried unlinking The Sims 2 (Ultimate Collection, specifically) from the metadata database. I even logged out of EA and told my Launchbox to never autoscan for that storefront, to ensure the store scan wasn't what was overwriting the entry. Is there some way to make it stop changing my custom launcher out?

Edited May 17 by Tamha

[Lordmonkus]

Import the exe for the injection launcher you use to load the game.

[Tamha]

You mean manually add it to my game list import? It's possible I just added it to the additional apps section rather than importing as a game itself, I don't remember for sure since I only recently started playing it again despite having installed it when I got this computer last year. I'll give that a go, thank you for the prompt reply.

[Lordmonkus]

Yup, just import the exe to the platform you want.

[Tamha]

That seems to have fixed it. Importantly, I couldn't combine them where the EA Play version was the root then change the default internally, despite that being an option. It still reverted back to the regular .exe rather than keeping the alternate one. Combining the other game into it seems to be working, though.