§ 8.01-1.How proceedings may be in actions pending when title takes effect.

Section 8.01-1 answers a question that comes up every time the legislature rewrites part of Title 8.01: does the new version govern a case that was already pending, or does the old version keep controlling because the case arose earlier? The default answer here is retroactive application — new provisions of this title reach back and apply to causes of action that arose before their effective date. The one carve-out written into the section itself is § 8.01-256, which sets its own transition rule for the limitations chapter.

That default gives way when a court decides the new provision does more than tidy up procedure. If applying it would materially change a party’s substantive rights, rather than just adjust the procedural mechanics of pursuing a remedy, or if applying it would cause a miscarriage of justice, the court instead applies the law that was in effect the day before the new provision took hold. The distinction the section draws — procedural aspects of a remedy versus substantive rights — puts the judgment call in the court’s hands case by case, rather than trying to sort every future amendment into a fixed category in advance.

In practice, this section is why a party cannot assume a newly enacted rule automatically controls a case filed years earlier, and why a party also cannot assume the old rule automatically survives. Each new provision gets tested against the same two questions: does it touch substantive rights, and would applying it produce an unjust result in this case.