Short answer. Yes. The Family Code says the rules in Articles 88 and 89, which govern absolute community property, also apply to the conjugal partnership of gains. Couples under a CPG regime are not left with a separate, unwritten set of rules on these points.
What the law says
The rules provided in Articles 88 and 89 shall also apply to conjugal partnership of gains.
Family Code, Article 107 — CPG: Commencement and No-Waiver Rules Apply. Read the full provision →
A short provision that borrows rather than repeats
Article 107 does not restate any rules of its own. Instead, it simply directs that the rules provided in Articles 88 and 89 shall also apply to conjugal partnership of gains. Rather than writing out separate commencement and no-waiver provisions for couples under a conjugal partnership, the Family Code borrows the ones already written for the absolute community regime and extends them across.
Why the two regimes share this ground
Absolute community and conjugal partnership of gains are the two main property regimes spouses in the Philippines can be governed by, and while they differ in what property each regime covers and how it is divided, some foundational questions, like when the property regime itself begins to operate between the spouses, and whether either spouse can give up their rights under it while the marriage is ongoing, do not need different answers depending on which regime the couple is under. Article 107 is what makes that shared answer official for CPG.
What Articles 88 and 89 actually say
Since Article 107 supplies no content of its own, the substance is worth stating. Article 88 provides that the regime shall commence at the precise moment that the marriage is celebrated, and that any stipulation, express or implied, for it to commence at any other time is void — spouses cannot backdate their regime to a period of cohabitation before the wedding, nor postpone it to a later date. Article 89 bars any waiver of rights, shares and effects of the regime during the marriage, except in the case of judicial separation of property. Where a waiver is validly made — on judicial separation, or after the marriage has been dissolved or annulled — it must appear in a public instrument and be recorded, and the creditors of the waiving spouse may petition the court to rescind it to the extent needed to cover their credits.
What this means practically
Because Article 107 incorporates Articles 88 and 89 by reference rather than repeating their content, a couple governed by conjugal partnership of gains who wants to know exactly when their property regime commenced, or whether an attempt to waive rights under it during the marriage is valid, is answered by looking at what Articles 88 and 89 themselves provide. Article 107's role is to confirm that those answers are not exclusive to absolute community couples.
The practical takeaway
If your marriage is governed by conjugal partnership of gains and a question comes up about when the regime started, or about an agreement purporting to waive a spouse's rights under it before the marriage has ended, you are not dealing with a gap in the law. Article 107 confirms the same rules that would apply under absolute community govern that question for you as well, so the relevant text to examine is what Articles 88 and 89 actually say, not a separate CPG-specific rule.