Hello @pfiscal
Thank you for reaching out on the community and telling us about your issue. Placeholders generally don't need to have the transaction added rather when you click on the investment account it'll say fix placeholders which generally just needs the price you originally bought them for to identify performance related metrics. You don't need to actually put them in if you don't want to and this is what you ended up doing. If you're primarily looking to track the investments without worrying about about any of the previous data what you've done is the easiest way to do that. I have fairly limited knowledge of investments but I do know other users have been working with them for a much longer time so they may have some other suggestions for you differing from what you've done. If you do let us know and we'll see what we can do.
Thanks,
Quicken Francisco