Mapping published related content layers into correlated reconstructed documents

A non-transitory computer readable storage medium storing executable computer program instructions for mapping supplemental content layers to an electronic source document stored by an electronic publishing platform, the source document being a later edition of an electronic target document, the computer program instructions comprising instructions for:

• accessing the target document, the target document having an electronic supplemental content layer including electronic content associated with content of the target document, wherein portions of the electronic content of the supplemental content layer are mapped to respective content items in the target document, and wherein the target document is an earlier edition of the source document;
• for each of a plurality of content items in the target document:
• identifying a content item in the source document similar to the content item in the target document;
• adding, to an index stored by the electronic publishing platform, a mapping between the identified content item in the source document and the content item in the target document;
• and
• associating the portion of the electronic content of the supplemental content layer mapped to the content item in the target document with the identified content item in the source document based on the index;
• and
• storing the portions of electronic content of the supplemental content layer mapped to content items in the source document as a supplemental content layer associated with the source document.

A computer-implemented method for mapping related content layers to an electronic source document, the method comprising:

• accessing a product catalog of an electronic publishing platform including a plurality of electronic foundation documents, the foundation documents each having related content layers comprising portions of electronic content mapped to respective content items of a corresponding foundation document;
• receiving the source document;
• identifying a target foundation document in the product catalog having content similarities to the source document, the target foundation document identified based on product attributes of the source document and product attributes of the target foundation document;
• for each of a plurality of content items in the identified target foundation document:
• identifying a content item in the source document similar to the content item in the target foundation document;
• adding, to an index stored by the electronic publishing platform, a mapping between the identified content item in the source document and the content item in the identified target foundation document;
• and
• mapping the portion of electronic content of a related content layer associated with the content item in the target foundation document to the identified content item in the source document based on the index;
• and
• storing the portions of electronic content of the related content layers mapped to content items in the source document as a related content layer associated with the source document.