yep if someone has history of such cc->wlt trnsactions on regular basis like for rent paymnt u mentioned would be safe. But if loan amount is huge the it cud be flagged by system for anomaly. instead can use partly funds for loan payment initially & gradually increaase wlt additions over time.
yes 100% legit as your cc & ur spend as you wish theoratically; but its the system flags sometimes if the spending patten surges like suzlon outof nowhere