I just made some minor edits to the Wikipost:

- added to second line “2 different biz cards” for UA and SW, “Hyatt and IHG”.
- added to last line “Once personal account is merged to business account, if all business cards are closed while keeping one (or more) personal cards open, online access to all cards will terminate and a new personal (online) account will need to be created using a different username than previous personal account.”

There were sporadic comments on this thread and on the WOH (Hyatt) personal card thread a year or so ago that Chase does NOT always enforce the 24 month rule for Ink card SUBs (implying that Ink cards are “churnable”) and that it may be possible to have more than one identical Ink card open at the same time. I have no experience with that, it would be helpful for those with more insight to those procedures to also update the Wikipost.