“at any time, all funds that one or more of you owe us or may or may owe us in the future, including this mortgage or an agreement covered by that mortgage” Banks often require that “all funds” of guarantors acknowledge that certain institutions are secured by a plethora of precautions. The “Takeaways” in this case are as follows: We conclude that, although not all secured funds should meet the terms of the underlying agreement, given that the National Merchant`s decision at first instance and the particular facts of this case depend on best practice at this time, best practice should be maintained to obtain written confirmation from the guarantor that it agrees with any modification of the underlying agreement between the lender and principal debtor. It is generally accepted that not all money guarantees are vulnerable to attacks based on the “Purview” doctrine. . . .