No, I haven't been able to find an answer anywhere.
I ended up only writing down the losses that I had, which were relatively small. Just some money that I transferred from my bank account abroad to my US account to use. I haven't found any information about that these personal losses should be reported, only information about gains/losses from investments etc. I ended up reporting the amount of money that I had taken from that bank account on form 8938, part III, line 1e, column c as a loss. In column d I wrote NA.
I might have written it down completely wrongly, but at least I could show that I didn't want to hide anything. I did receive my tax refund from the IRS recently, so it seems things have worked out.
Sorry, other than this information, I cannot give you any reliable advice.
