Will I be able to spend my siafunds with the GUI of 1.0? And will I be able to import my old wallet.dat or wallet.backup?
I am a participant in the genesis account of siafunds. I hope I haven't lost my siafunds forever. But I am not sure. All I have are old wallet.dat's and wallet.backup files.
can anyone answer this?
I was talking to Taek on Slack about this. He said I have to wait until 1.0 and that he thinks my Siafunds are NOT lost. Let's hope the best

What is the actual problem here? If you have the wallet.dat, then why is there any threat you may have lost your siafunds?
where are the siafunds stored? I thought they were on the sia blockchain
The problem is that the current client does not support the import of these very old wallet.dats from june 2015. Therefore I am not able to sell my siafunds now, although i wanted to. Let's hope that version 1.0 will support the import of these old wallet.dats.
Ok, you're probably not the only one effected by this, so I'm sure Taek will add an import function for legacy wallets eventually.
Where is the market for siafunds anyway? Is it OTC only?
Not so many people are affected by this as one might expect. Because you can import your siafunds from genesis via the seed you initially generated to claim them. But I didn't keep my seed, because I fully relied on having the wallet.dat and backups of that file. I didn't expect we would get to a point where those wallet.dats no longer work.
I may be affected, got a wallet.dat made in June with 0.3.3 but no seed, I don't remember there was a seed. There are no siafunds, just some mined siacoins, can this be imported in the recent release?