That would be alright because OP had stated that he just wanted to sell some staff in that digital wallet he has and that could only be done by having a digital wallet.
It is still not safe to import your seed phrase into a desktop wallet because we don't know what OP is trying to sell and what else he keeps on his wallet that is protected by that same seed.
He might be interested in selling a few dollars of an unimportant altcoin, but the same account holds several Bitcoins. Importing that seed anywhere online is a risk. If it were the other way around, and he wanted to sell his Bitcoin holdings which represent the majority of his portfolio, it would be a risk I am willing to take. But the funds should leave the desktop wallet asap.