Any process that activates or increases the frequency, rate or extent of movement of RNA from the cytoplasm into the nucleus.
Synonyms:
exact_synonym:
positive regulation of RNA import into cell nucleus; positive regulation of RNA transport from cytoplasm to nucleus; positive regulation of RNA-nucleus import; up regulation of RNA import into nucleus; upregulation of RNA import into nucleus
narrow_synonym:
activation of RNA import into nucleus; stimulation of RNA import into nucleus