If an entity doesn't harvest this lifetime, does it get another chance on Earth?

[xise]

There are different types of harvest in 3D from my understanding of the Ra material:

1) Major Cycle Harvest, every 75,000. This is the harvest polarization stuff Ra talks most about.
2) Minor Cycle Harvest, every 25,000 years. From memory, I believe the harvest requirements are similar to the major cycle, but they could be harder, I don't recall offhand as I don't think the subject is discussed much.
3) Self-Harvest At Any Time. There is a Ra quote about self-harvest is available when one opens the gateway to intelligent infinity via the indigo ray. This is adept-level work and requires more than the polarization required for harvests that occur at the end of the cycles. This quote is below:

14.16 ▶ Questioner: There was no harvest? What about 25,000 years ago? Was there a harvest then?

Ra: I am Ra. A harvesting began taking place in the latter portion, as you measure time/space, of the second cycle, with individuals finding the gateway to intelligent infinity. The harvest of that time, though extremely small, were those entities of extreme distortion towards service to the entities which now were to repeat the major cycle. These entities, therefore, remained in third density although they could, at any moment/present nexus, leave this density through use of intelligent infinity.

Note the harvesting took place at "the latter portion ... of the second cycle with individuals finding the gateway to intelligent infinity", thus this is distinct from the end of cycle harvests.