For purposes of section 148 and this section, section 143(g)(2)(C)(ii) applies to the computation of yield on an issue of qualified mortgage bonds or qualified veterans’ mortgage bonds. For purposes of applying section 148 and section 143(g) with respect to purpose investments allocable to a variable yield issue of qualified mortgage bonds, qualified veterans‘ mortgage bonds, or qualified student loan bonds that is reasonably expected as of the issue date to convert to a fixed yield issue, the yield may be computed over the term of the issue, and, if the yield is so computed, paragraph (d) of this section does not apply to the issue. As of any date, the yield over the term of the issue is based on --
(1) With respect to any bond of the issue that has not converted to a fixed and determinable yield on or before that date, the actual amounts paid or received to that date and the amounts that are reasonably expected (as of that date) to be paid or received with respect to that bond over the remaining term of the issue (taking into account prepayment assumptions under section 143(g)(2)(B)(iv), if applicable); and
(2) With respect to any bond of the issue that has converted to a fixed and determinable yield on or before that date, the actual amounts paid or received before that bond converted, if any, and the amount that was reasonably expected (on the date that bond converted) to be paid or received with respect to that bond over the remaining term of the issue (taking into account prepayment assumptions under section 143(g)(2)(B)(iv), if applicable).