Major Changes to Title Proper (RDA 220.127.116.11.1)
LC-PCC PS Major-Minor Changes in the Titles Proper of Serials. General Guidelines. [Section in PS preceding LC-PCC PS 18.104.22.168.1]
1. RDA instructions 22.214.171.124 and 126.96.36.199 apply to serials, series, and series-like phrases.
2. Base decisions on title changes on a comparison of the titles proper; do not use a variant title as the basis for title changes in serials or series.
3. "Multiple minor changes in the title do not equal a major change."
Most changes requiring a new record involve the title proper (for serials, 245 ‡a and ‡p; for series 490 ‡a [490 does not have a subfield for parts]. Per RDA 188.8.131.52.1 (formerly AACR2 21.2A1), a major change in the title proper is considered to be
a. the addition, deletion, change, or reordering of any of the first five words (the first six words if the title beings with an article) unless the change belongs to one or more of the categories listed in RDA 184.108.40.206.2 (Minor Changes)
b. the addition, deletion, or change of any word after the first five words (the first six words if the title begins with an article) that changes the meaning of the title or indicates a different subject matter
c. a change of name for a corporate body included anywhere in the title if the changed name is for a different corporate body [i.e. the corporate body name would have a separate authority record].