27 C.F.R. § 40.405
Where the appropriate TTB officer determines that the amount of the bond, under which a manufacturer of cigarette papers and tubes is currently carrying on such business, no longer adequately protects the revenue, the appropriate TTB officer may require the manufacturer to file a strengthening bond in an appropriate amount with the same surety as that on the bond already in effect, in lieu of a superseding bond to cover the full liability on the basis of §40.404. The appropriate TTB officer shall refuse to approve any strengthening bond where any notation is made thereon which is intended or which may be construed as a release of any former bond, or as limiting the amount of either bond to less than its full amount.
27 C.F.R. § 40.405
72 Stat. 1421; 26 U.S.C. 5711